M CHANGES → CHANGES

@@ -94,6 +94,7 @@ - Core: Restore sleep callback
  - Qt: Add .gb/.gbc files to the extension list in Info.plist
  - Feature: Make -l option explicit
  - Core: Ability to enumerate and modify video and audio channels
+ - Debugger: Make attaching a backend idempotent
 
 0.5.2: (2016-12-31)
 Bugfixes:

M src/debugger/cli-debugger.c → src/debugger/cli-debugger.c

@@ -751,6 +751,9 @@ system->p = debugger;
 }
 
 void CLIDebuggerAttachBackend(struct CLIDebugger* debugger, struct CLIDebuggerBackend* backend) {
+	if (debugger->backend == backend) {
+		return;
+	}
 	if (debugger->backend && debugger->backend->deinit) {
 		debugger->backend->deinit(debugger->backend);
 	}