when loadable modules are disabled, if someone tries to load a module that does not exist, don't dereference a NULL pointer, just stop trying to load it...

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40854 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/loader.c

@@ -587,6 +587,8 @@ static enum ast_module_load_result load_resource(const char *resource_name, unsi
 				return AST_MODULE_LOAD_SKIP;
 			}
 		}
+#else
+		return AST_MODULE_LOAD_DECLINE;
 #endif
 	}