random bold faces

[Tak Ota]

The below patch corrects occurrence of random bold faces when using
BDF font.  It happens when choose_face_font returns without calling
best_matching_font. 

-Tak

$ diff -c emacs-21.3.50/src/xfaces.c ../emacs-21.3.50/src/xfaces.c
*** emacs-21.3.50/src/xfaces.c  Mon Mar 31 22:06:27 2003
--- ../emacs-21.3.50/src/xfaces.c       Wed Apr  2 10:27:08 2003
***************
*** 6439,6444 ****
--- 6439,6447 ----
    struct font_name *fonts;
    int nfonts, width_ratio;
  
+   if (needs_overstrike)
+     *needs_overstrike = 0;
+ 
    /* Get (foundry and) family name and registry (and encoding) name of
       a font for C.  */
    pattern = fontset_font_pattern (f, fontset, c);