Fix Corsair and Lightpack loading issues

Corsair devices were loading when they were not supposed to, and were
not loading when they were supposed to.
Lightpack devices were loading when they were not supposed to.

src/Devices/DeviceCorsair.cpp

@@ -67,9 +67,9 @@ namespace lightfx {
                     this->library->CorsairPerformProtocolHandshake();
                     if (const auto error = this->library->CorsairGetLastError()) {
                         LOG_ERROR(L"Handshake with Corsair failed: " + this->library->CorsairErrorToString(error));
-                    } else {
                         this->SetEnabled(false);
                         return false;
+                    } else {
                         this->Reset();
                         this->ledPositions = this->library->CorsairGetLedPositions();
                     }

src/Devices/DeviceLightpack.cpp

@@ -56,6 +56,8 @@ namespace lightfx {
 
                         this->Reset();
                         this->DisconnectAPI();
+                    } else {
+                        return false;
                     }
                 } else {
                     return false;