FS-4099 --resolve windows only regression

src/mod/formats/mod_sndfile/mod_sndfile.c

@@ -67,7 +67,7 @@ static switch_status_t sndfile_file_open(switch_file_handle_t *handle, const cha
 	int i;
 	sf_count_t frames = 0;
 #ifdef WIN32
-	char ps = '\\';
+	char ps = '/';
 #else
 	char ps = '/';
 #endif
@@ -169,8 +169,8 @@ static switch_status_t sndfile_file_open(switch_file_handle_t *handle, const cha
 	if ((last = strrchr(alt_path, ps))) {
 		last++;
 #ifdef WIN32
-		if (strrchr(last, '/')) {
-			last = strrchr(alt_path, '/');	/* do not swallow a forward slash if they are intermixed under windows */
+		if (strrchr(last, '\\')) {
+			last = strrchr(alt_path, '\\');	/* do not swallow a back slash if they are intermixed under windows */
 			last++;
 		}
 #endif