Don't start adb.exe in the build folder on Windows as this keeps it from being cleaned, adb.exe is sometimes returning an error code when listing devices, however successfully listing device, so ignore error code in this case

Source/AtomicEditor/Source/Build/BuildAndroid.cpp

@@ -76,7 +76,7 @@ void BuildAndroid::HandleEvent(StringHash eventType, VariantMap& eventData)
 
         int code = eventData[SubprocessComplete::P_RETCODE].GetInt();
 
-        if (!code)
+        if (!code || currentBuildPhase_ == ADBListDevices)
         {
             // success
             if (currentBuildPhase_ == AndroidUpdateProject)
@@ -230,7 +230,7 @@ void BuildAndroid::RunADBListDevices()
     Vector<String> args = String("devices").Split(' ');
 
     currentBuildPhase_ = ADBListDevices;
-    Subprocess* subprocess = subs->Launch(adbCommand, args, buildPath_);
+    Subprocess* subprocess = subs->Launch(adbCommand, args, "");
 
     if (!subprocess)
     {
@@ -353,6 +353,13 @@ void BuildAndroid::Build(const String& buildPath)
     if (fileSystem->DirExists(buildPath_))
         fileSystem->RemoveDir(buildPath_, true);
 
+    if (fileSystem->DirExists(buildPath_))
+    {
+        BuildSystem* buildSystem = GetSubsystem<BuildSystem>();
+        buildSystem->BuildComplete(AE_PLATFORM_ANDROID, buildPath_, false);
+        editor->PostModalInfo("Build Error", ToString("Build Folder:\n\n %s\n\nis in use and could not be removed, please select another build folder.", buildPath_.CString()));
+        return;
+    }
 
 #ifdef ATOMIC_PLATFORM_OSX
     String buildSourceDir = fileSystem->GetAppBundleResourceFolder();