Fix effect gate logic (#7971)

Reverts a mistake from #7696

src/core/Effect.cpp

@@ -190,7 +190,7 @@ void Effect::checkGate(double outSum)
 
 	// Check whether we need to continue processing input.  Restart the
 	// counter if the threshold has been exceeded.
-	if (approximatelyEqual(outSum, gate()))
+	if (outSum - gate() <= F_EPSILON)
 	{
 		incrementBufferCount();
 		if( bufferCount() > timeout() )