PCH-less build fixes after r78480.

Must include wx/log.h to use wxLogSysError() when not using PCH.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78482 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/filedlg.cpp

@@ -15,6 +15,7 @@
 
 #ifndef WX_PRECOMP
     #include "wx/intl.h"
+    #include "wx/log.h"
     #include "wx/msgdlg.h"
 #endif
 

src/gtk/filepicker.cpp

@@ -18,6 +18,10 @@
 
 #if wxUSE_FILEPICKERCTRL
 
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+#endif
+
 #include "wx/filepicker.h"
 #include "wx/tooltip.h"