COMMON: Fix memory leak when invalid PE executable is loaded

In function `PEResources::loadFromEXE`, there were memory leaks
because of not properly handling with streams, and thus when the
loaded movie was bad/non-exe file, the memory was not freed.

This was undetected in normal exe loading because there the streams
were being assigned and closed properly.

common/formats/winexe_pe.cpp

@@ -49,6 +49,9 @@ void PEResources::clear() {
 bool PEResources::loadFromEXE(SeekableReadStream *stream, DisposeAfterUse::Flag disposeFileHandle) {
 	clear();
 
+	_exe = stream;
+	_disposeFileHandle = disposeFileHandle;
+
 	if (!stream)
 		return false;
 
@@ -95,9 +98,6 @@ bool PEResources::loadFromEXE(SeekableReadStream *stream, DisposeAfterUse::Flag
 		return false;
 	}
 
-	_exe = stream;
-	_disposeFileHandle = disposeFileHandle;
-
 	Section &resSection = _sections[".rsrc"];
 	parseResourceLevel(resSection, resSection.offset, 0);