res_pjsip_endpoint_identifier_ip: Ensure error defaults to 0.

When configuring a match using a netmask the error variable was
not defaulting to 0. For some people this would cause the code
to think an error occurred when adding the match when in reality
it added perfectly fine.

ASTERISK-26693

Change-Id: I850c250813742bddde65c84e739093c9e01dfe56

res/res_pjsip_endpoint_identifier_ip.c

@@ -247,7 +247,7 @@ static int ip_identify_match_handler(const struct aco_option *opt, struct ast_va
 
 	while ((current_string = ast_strip(strsep(&input_string, ",")))) {
 		char *mask = strrchr(current_string, '/');
-		int error;
+		int error = 0;
 
 		if (ast_strlen_zero(current_string)) {
 			continue;