Ugly hack to avoid crash on msys2 when running Pcbnew after running Eeschema+its Python console

The main bug still exists, but at least Kicad does not crash.

bitmap2component/bitmap2cmp_main.cpp

@@ -93,6 +93,13 @@ PGM_BASE& Pgm()
     wxASSERT( process );    // KIFACE_GETTER has already been called.
     return *process;
 }
+
+
+// Similar to PGM_BASE& Pgm(), but return nullptr when a *.ki_face is run from a python script.
+PGM_BASE* PgmOrNull()
+{
+    return process;
+}
 #endif