Add missing LF in OpenGL trace message

[Mike McCormack <mike@codeweavers.com>]

ChangeLog:
* Add missing LF in OpenGL trace message

Index: dlls/opengl32/wgl.c
===================================================================
RCS file: /home/wine/wine/dlls/opengl32/wgl.c,v
retrieving revision 1.38
diff -u -r1.38 wgl.c
--- dlls/opengl32/wgl.c	5 Sep 2003 23:08:32 -0000	1.38
+++ dlls/opengl32/wgl.c	17 Sep 2003 10:03:08 -0000
@@ -320,7 +320,7 @@
   }
 
   if (p_glXGetProcAddressARB == NULL) {
-    ERR("Warning : dynamic GL extension loading not supported by native GL library.");
+    ERR("Warning : dynamic GL extension loading not supported by native GL library.\n");
     return NULL;
   }