Fix compilation errors when FM radio is disabled

app/generic.c

@@ -83,7 +83,9 @@ void GENERIC_Key_F(bool bKeyPressed, bool bKeyHeld)
 	}
 	else // short pressed
 	{
+#ifdef ENABLE_FMRADIO
 		if (gScreenToDisplay != DISPLAY_FM)
+#endif
 		{
 			gBeepToPlay = BEEP_1KHZ_60MS_OPTIONAL;
 			return;
@@ -230,8 +232,15 @@ cancel_tx:
 
 done:
 	gPttDebounceCounter = 0;
-	if (gScreenToDisplay != DISPLAY_MENU && gRequestDisplayScreen != DISPLAY_FM)     // 1of11 .. don't close the menu
+	if (gScreenToDisplay != DISPLAY_MENU
+#ifdef ENABLE_FMRADIO
+		&& gRequestDisplayScreen != DISPLAY_FM
+#endif
+	) {
+		// 1of11 .. don't close the menu
 		gRequestDisplayScreen = DISPLAY_MAIN;
+	}
+
 	gUpdateStatus  = true;
 	gUpdateDisplay = true;
 }