Remove unnecessary braces.

lib/termsupport.zsh

@@ -63,9 +63,8 @@ if [[ "$TERM_PROGRAM" == "Apple_Terminal" ]] && [[ -z "$INSIDE_EMACS" ]]; then
   # Outputs the encoded string on stdout
   # Returns nonzero if encoding failed
   function _omz_urlencode() {
-    local url_str=''
-    {
     local str=$1
+    local url_str=''
 
     # URLs must use UTF-8 encoding; convert if required
     local encoding=${LC_CTYPE/*./}
@@ -90,7 +89,6 @@ if [[ "$TERM_PROGRAM" == "Apple_Terminal" ]] && [[ -z "$INSIDE_EMACS" ]]; then
     done
     echo $url_str
   }
-  }
 
   # Emits the control sequence to notify Terminal.app of the cwd
   function update_terminalapp_cwd() {