fluid_is_midifile(): only accept regular files

src/bindings/fluid_filerenderer.c

@@ -298,7 +298,7 @@ new_fluid_file_renderer(fluid_synth_t *synth)
     sf_command(dev->sndfile, SFC_SET_NORM_FLOAT, NULL, SF_TRUE);
 
 #else
-    dev->file = fopen(filename, "wb");
+    dev->file = FLUID_FOPEN(filename, "wb");
 
     if(dev->file == NULL)
     {

src/midi/fluid_midi.c

@@ -103,6 +103,13 @@ int fluid_is_midifile(const char *filename)
             return retcode;
         }
         
+        // file exists and we have permission to open it
+        // now, test whether it's acutally a regular file or a symlink to such
+        if(!fluid_file_test(filename, G_FILE_TEST_IS_REGULAR))
+        {
+            break;
+        }
+
         if(FLUID_FREAD(&id, sizeof(id), 1, fp) != 1)
         {
             break;