Better check

Need to check if a device is actually selected, not just if there is one to select

source_modules/limesdr_source/src/main.cpp

@@ -319,7 +319,7 @@ private:
     static void start(void* ctx) {
         LimeSDRSourceModule* _this = (LimeSDRSourceModule*)ctx;
         if (_this->running) { return; }
-        if (_this->devCount == 0) { return; }
+        if (_this->selectedDevName.empty()) { return; }
 
         // Open device
         _this->openDev = NULL;
@@ -547,4 +547,4 @@ MOD_EXPORT void _DELETE_INSTANCE_(ModuleManager::Instance* instance) {
 MOD_EXPORT void _END_() {
     config.disableAutoSave();
     config.save();
-}
+}