Only include OpenMPT subsongs if they're 10 seconds or longer.

Plugins/OpenMPT/OpenMPT/OMPTContainer.mm

@@ -63,12 +63,14 @@
         int i;
         int subsongs = mod->get_num_subsongs();
         
-        delete mod;
-        
         for (i = 0; i < subsongs; ++i) {
+            mod->select_subsong(i);
+            if (mod->get_duration_seconds() < 10.0) continue;
             [tracks addObject:[NSURL URLWithString:[[url absoluteString] stringByAppendingFormat:@"#%i", i]]];
         }
         
+        delete mod;
+        
         return tracks;
     } catch ( std::exception & /*e*/ ) {
         return 0;