Terminal: Simplify CLICOLOR_FORCE check

Terminal.c

@@ -167,8 +167,7 @@ static int kwsysTerminalStreamIsVT100(FILE* stream, int default_vt100,
   /* Force color according to http://bixense.com/clicolors/ convention.  */
   {
     const char* clicolor_force = getenv("CLICOLOR_FORCE");
-    if (clicolor_force && *clicolor_force &&
-        strcmp(clicolor_force, "0") != 0) {
+    if (clicolor_force && strcmp(clicolor_force, "0") != 0) {
       return 1;
     }
   }