utils: renamed stringFoundInStringArray()

No CamelCase.  Use bool instead of int.  Make both arguments
mandatory.

src/archive_list.c

@@ -60,7 +60,8 @@ archive_plugin_from_suffix(const char *suffix)
 	for (i=0; i < num_archive_plugins; ++i) {
 		const struct archive_plugin *plugin = archive_plugins[i];
 		if (archive_plugins_enabled[i] &&
-		    stringFoundInStringArray(plugin->suffixes, suffix)) {
+		    plugin->suffixes != NULL &&
+		    string_array_contains(plugin->suffixes, suffix)) {
 			++i;
 			return plugin;
 		}