From b8ab2ab672050835a79b3d8752c71cb146e07da8 Mon Sep 17 00:00:00 2001
From: Benjamin Jurk <106487517+bnjmnjrk@users.noreply.github.com>
Date: Mon, 7 Apr 2025 15:13:23 +0200
Subject: [PATCH] make nsm.h (c)importable from zig

The zig cImport feature is not happy with the line
`OSC_REPLY_ERR( r, ( out_msg ? out_msg : "") );`
because out_msg is a string list and "" is just a string.
---
 extras/nsm.h/nsm.h | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/extras/nsm.h/nsm.h b/extras/nsm.h/nsm.h
index ad98c97..16d33ab 100644
--- a/extras/nsm.h/nsm.h
+++ b/extras/nsm.h/nsm.h
@@ -486,8 +486,13 @@ NSM_EXPORT int _nsm_osc_open ( const char *path, const char *types, lo_arg **arg
 
     int r = nsm->open( &argv[0]->s, &argv[1]->s, &argv[2]->s, &out_msg, nsm->open_userdata );
 
-    if ( r )
-        OSC_REPLY_ERR( r, ( out_msg ? out_msg : "") );
+    if ( r ) {
+        if ( out_msg == NULL) {	
+    	  OSC_REPLY_ERR( r, "");
+    	else {
+    	  OSC_REPLY_ERR( r, out_msg);
+    	}
+    }
     else
         OSC_REPLY( "OK" );
 
@@ -513,8 +518,13 @@ NSM_EXPORT int _nsm_osc_save ( const char *path, const char *types, lo_arg **arg
 
     int r = nsm->save(&out_msg, nsm->save_userdata );
 
-    if ( r )
-        OSC_REPLY_ERR( r, ( out_msg ? out_msg : "") );
+    if ( r ) {
+        if ( out_msg == NULL) {	
+    	  OSC_REPLY_ERR( r, "");
+    	else {
+    	  OSC_REPLY_ERR( r, out_msg);
+    	}
+    }
     else
         OSC_REPLY( "OK" );