revert my pass through the tree to remove checks of the result of ast_strdupa

(revisions 8378 through 8381)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@8387 65c4cc65-6c06-0410-ace0-fbb531ad65f3

funcs/func_math.c

@@ -89,6 +89,10 @@ static char *builtin_function_math(struct ast_channel *chan, char *cmd, char *da
 	}
 
 	parse = ast_strdupa(data);
+	if(!parse) {
+		ast_log(LOG_ERROR, "Out of memory!\n");
+		return NULL;
+	}
 
 	AST_STANDARD_APP_ARGS(args, parse);