Fix type of randomSeed parameter

It should be uint. I am not sure this fixes the mentioned bug, but it's
correct anyway, std::mt19937 and co. unsigned types; and we shouldn't mix
signed with unsigned.

CCBUG: 434892

src/terminalDisplay/TerminalColor.cpp

@@ -30,7 +30,7 @@ namespace Konsole
         setColorTable(ColorScheme::defaultTable);
     }
     
-    void TerminalColor::applyProfile(const Profile::Ptr &profile, ColorScheme const *colorScheme, int randomSeed)
+    void TerminalColor::applyProfile(const Profile::Ptr &profile, ColorScheme const *colorScheme, uint randomSeed)
     {
         QColor table[TABLE_COLORS];
         colorScheme->getColorTable(table, randomSeed);

src/terminalDisplay/TerminalColor.h

@@ -30,7 +30,7 @@ namespace Konsole
     public:
         explicit TerminalColor(QWidget *parent);
 
-        void applyProfile(const Profile::Ptr &profile, ColorScheme const *colorScheme, int randomSeed);
+        void applyProfile(const Profile::Ptr &profile, ColorScheme const *colorScheme, uint randomSeed);
 
         QColor backgroundColor() const;
         QColor foregroundColor() const;