Fix comment

source/Mockingboard.cpp

@@ -287,7 +287,7 @@ void MockingboardCard::UpdateIFRandIRQ(MB_SUBUNIT* pMB, BYTE clr_mask, BYTE set_
 
 //---------------------------------------------------------------------------
 
-// Called from class SY6522
+// Called from MockingboardCardMgr
 bool MockingboardCard::Is6522IRQ(void)
 {
 	// Now update the IRQ signal from all 6522s

source/MockingboardCardManager.cpp

@@ -109,6 +109,7 @@ void MockingboardCardManager::UpdateCycles(ULONG executedCycles)
 	}
 }
 
+// Called from class SY6522
 void MockingboardCardManager::UpdateIRQ(void)
 {
 	bool irq = false;