Drop redundant casts to the same type

Action.c

@@ -305,7 +305,7 @@ static Htop_Reaction actionSetAffinity(State* st) {
 }
 
 static Htop_Reaction actionKill(State* st) {
-   Panel* signalsPanel = (Panel*) SignalsPanel_new();
+   Panel* signalsPanel = SignalsPanel_new();
    ListItem* sgn = (ListItem*) Action_pickFromVector(st, signalsPanel, 15, true);
    if (sgn) {
       if (sgn->key != 0) {

AvailableMetersPanel.c

@@ -25,7 +25,7 @@ static void AvailableMetersPanel_delete(Object* object) {
 }
 
 static inline void AvailableMetersPanel_addMeter(Header* header, Panel* panel, MeterClass* type, int param, int column) {
-   Meter* meter = (Meter*) Header_addMeterByClass(header, type, param, column);
+   Meter* meter = Header_addMeterByClass(header, type, param, column);
    Panel_add(panel, (Object*) Meter_toListItem(meter, false));
    Panel_setSelected(panel, Panel_size(panel) - 1);
    MetersPanel_setMoving((MetersPanel*)panel, true);

InfoScreen.c

@@ -57,7 +57,7 @@ void InfoScreen_addLine(InfoScreen* this, const char* line) {
    Vector_add(this->lines, (Object*) ListItem_new(line, 0));
    const char* incFilter = IncSet_filter(this->inc);
    if (!incFilter || String_contains_i(line, incFilter))
-      Panel_add(this->display, (Object*)Vector_get(this->lines, Vector_size(this->lines)-1));
+      Panel_add(this->display, Vector_get(this->lines, Vector_size(this->lines)-1));
 }
 
 void InfoScreen_appendLine(InfoScreen* this, const char* line) {

Meter.c

@@ -282,7 +282,7 @@ static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
    struct timeval now;
    gettimeofday(&now, NULL);
    if (!timercmp(&now, &(data->time), <)) {
-      struct timeval delay = { .tv_sec = (int)(CRT_delay/10), .tv_usec = (CRT_delay-((int)(CRT_delay/10)*10)) * 100000 };
+      struct timeval delay = { .tv_sec = CRT_delay/10, .tv_usec = (CRT_delay-((CRT_delay/10)*10)) * 100000 };
       timeradd(&now, &delay, &(data->time));
 
       for (int i = 0; i < nValues - 1; i++)

StringUtils.c

@@ -112,7 +112,7 @@ char* String_getToken(const char* line, const unsigned short int numMatch) {
    }
 
    match[foundCount] = '\0';
-   return((char*)xStrdup(match));
+   return xStrdup(match);
 }
 
 char* String_readLine(FILE* fd) {

Vector.c

@@ -309,7 +309,7 @@ inline int Vector_indexOf(Vector* this, void* search_, Object_Compare compare) {
    assert(compare);
    assert(Vector_isConsistent(this));
    for (int i = 0; i < this->items; i++) {
-      Object* o = (Object*)this->array[i];
+      Object* o = this->array[i];
       assert(o);
       if (compare(search, o) == 0)
          return i;

linux/Battery.c

@@ -100,11 +100,11 @@ static ACPresence procAcpiCheck(void) {
    }
 
    for (;;) {
-      struct dirent* dirEntry = readdir((DIR *) dir);
+      struct dirent* dirEntry = readdir(dir);
       if (!dirEntry)
          break;
 
-      char* entryName = (char *) dirEntry->d_name;
+      const char* entryName = dirEntry->d_name;
 
       if (entryName[0] != 'A')
          continue;
@@ -189,10 +189,10 @@ static void Battery_getSysData(double* level, ACPresence* isOnAC) {
    unsigned long int totalRemain = 0;
 
    for (;;) {
-      struct dirent* dirEntry = readdir((DIR *) dir);
+      struct dirent* dirEntry = readdir(dir);
       if (!dirEntry)
          break;
-      char* entryName = (char *) dirEntry->d_name;
+      const char* entryName = dirEntry->d_name;
       char filePath[256];
 
       xSnprintf(filePath, sizeof filePath, SYS_POWERSUPPLY_DIR "/%s/type", entryName);

linux/LinuxProcess.c

@@ -290,7 +290,7 @@ void LinuxProcess_writeField(Process* this, RichString* str, ProcessField field)
       xSnprintf(buffer, n, "%5lu ", lp->ctxt_diff);
       break;
    default:
-      Process_writeField((Process*)this, str, field);
+      Process_writeField(this, str, field);
       return;
    }
    RichString_append(str, attr, buffer);

linux/LinuxProcessList.c

@@ -232,7 +232,7 @@ static inline unsigned long long LinuxProcess_adjustTime(unsigned long long t) {
       jiffy = sc_jiffy;
    }
    double jiffytime = 1.0 / jiffy;
-   return (unsigned long long) t * jiffytime * 100;
+   return t * jiffytime * 100;
 }
 
 static bool LinuxProcessList_readStatFile(Process *process, const char* dirname, const char* name, char* command, int* commLen) {