Bug 366742 - printf_stderr should be declared as NS_COM_GLUE

p=Andrew Miller <ak.miller@auckland.ac.nz>
r=bsmedberg, sr=shaver

xpcom/glue/nsDebug.h

@@ -250,7 +250,7 @@
  */
 PR_BEGIN_EXTERN_C
 
-void
+NS_COM_GLUE void
 printf_stderr(const char *fmt, ...);
 
 PR_END_EXTERN_C