Fix/prevent crashes when MainWindow is closed before LoadFile() completes, or when it gets certain messages before TheThread completes initialization.

Fix missing ppsspp.ini loading log (only 1 unimportant line though).
Fix loading ui_atlas.zim failure when [General]Browse = True is set in ppsspp.ini.
Some other minor fixes as well.

Windows/Debugger/Debugger_Disasm.cpp

@@ -228,7 +228,7 @@ BOOL CDisasm::DlgProc(UINT message, WPARAM wParam, LPARAM lParam)
 
 			case IDC_MEMCHECK:
 				{
-					bool isRunning = !Core_IsInactive();
+					bool isRunning = Core_IsActive();
 					if (isRunning)
 					{
 						SetDebugMode(true);