Fixed deadlock when inserting snippets when using autocomplete keys

src/source_generic.cpp

@@ -234,7 +234,7 @@ void Source::GenericView::setup_autocomplete() {
           }
         }
       }
-      LockGuard lock(snippets_mutex);
+      if(snippets_mutex.try_lock()) { // To avoid deadlock when inserting snippets
         if(snippets) {
           for(auto &snippet : *snippets) {
             if(starts_with(snippet.prefix, prefix)) {
@@ -244,6 +244,8 @@ void Source::GenericView::setup_autocomplete() {
             }
           }
         }
+        snippets_mutex.unlock();
+      }
     }
     return true;
   };