TestDriver: use for loop

Templates/TestDriver.cxx.in

@@ -47,10 +47,8 @@ static char* lowercase(const char* string)
     return 0;
   }
   strncpy(new_string, string, stringSize);
-  p = new_string;
-  while (*p != 0) {
+  for (p = new_string; *p != 0; ++p) {
     *p = CM_CAST(char, tolower(*p));
-    ++p;
   }
   return new_string;
 }