Only print out the controller mappings if we're not going to test a controller

test/testgamecontroller.c

@@ -260,15 +260,17 @@ main(int argc, char *argv[])
     SDL_GameControllerAddMappingsFromFile("gamecontrollerdb.txt");
 
     /* Print information about the mappings */
-    SDL_Log("Supported mappings:\n");
-    for (i = 0; i < SDL_GameControllerNumMappings(); ++i) {
-        char *mapping = SDL_GameControllerMappingForIndex(i);
-        if (mapping) {
-            SDL_Log("\t%s\n", mapping);
-            SDL_free(mapping);
+    if (!argv[1]) {
+        SDL_Log("Supported mappings:\n");
+        for (i = 0; i < SDL_GameControllerNumMappings(); ++i) {
+            char *mapping = SDL_GameControllerMappingForIndex(i);
+            if (mapping) {
+                SDL_Log("\t%s\n", mapping);
+                SDL_free(mapping);
+            }
         }
+        SDL_Log("\n");
     }
-    SDL_Log("\n");
 
     /* Print information about the controller */
     for (i = 0; i < SDL_NumJoysticks(); ++i) {