Fix PC Speaker going silent after a while

For example, in Crystal Caves (any episode) the PC Speaker emits the expected
beeps and boops until some point during the game's intro. From then on, it no
longer outputted any sound.

This started with commit 84cf57b.

src/hardware/pcspeaker.cpp

@@ -214,11 +214,10 @@ void PCSPEAKER_SetCounter(Bitu cntr,Bitu mode) {
 		return;
 	}
 	spkr.pit_mode=mode;
+
 	//DBP: Delay sound output until second event to avoid crackling audio when initialized but not used
-	if (!spkr.enabled && spkr.used > 1) {
-		if(spkr.chan) spkr.chan->Enable(true);
-		spkr.enabled=true;
-	}
+	if (!spkr.enabled && spkr.used > 1) spkr.enabled=true;
+	if (spkr.chan) spkr.chan->Enable(spkr.enabled);
 }
 
 void PCSPEAKER_SetType(Bitu mode) {
@@ -248,11 +247,10 @@ void PCSPEAKER_SetType(Bitu mode) {
 		spkr.mode=SPKR_PIT_ON;
 		break;
 	};
+
 	//DBP: Delay sound output until second event to avoid crackling audio when initialized but not used
-	if (!spkr.enabled && (spkr.used > 1 || mode > 1)) {
-		if(spkr.chan) spkr.chan->Enable(true);
-		spkr.enabled=true;
-	}
+	if (!spkr.enabled && (spkr.used > 1 || mode > 1)) spkr.enabled=true;
+	if (spkr.chan) spkr.chan->Enable(spkr.enabled);
 }
 
 static void PCSPEAKER_CallBack(Bitu len) {