Use bool for boolean in xfont.c, xftfont.c, xgselect.c

* xfont.c (xfont_driver, xfont_chars_supported)
(xfont_text_extents):
* xftfont.c (xftfont_get_colors, xftfont_open)
(xftfont_prepare_face, xftfont_done_face)
(xftfont_cached_font_ok):
* xgselect.c (xg_select):
Use bool for boolean.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/xfont.c b/src/xfont.c
index 10cc321b60c..55053b9a421 100644
--- a/src/xfont.c
+++ b/src/xfont.c
@@ -132,7 +132,7 @@ static int xfont_check (struct frame *, struct font *);
 struct font_driver xfont_driver =
   {
     LISP_INITIALLY_ZERO,        /* Qx */
-    0,                          /* case insensitive */
+    false,                      /* case insensitive */
     xfont_get_cache,
     xfont_list,
     xfont_match,
@@ -269,7 +269,7 @@ xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont,
         }
       return (i >= 0);
     }
-  return 0;
+  return false;
 }
 
 /* A hash table recoding which font supports which scripts.  Each key
@@ -983,7 +983,7 @@ xfont_text_extents (struct font *font, unsigned int *code,
   int i, width = 0;
   bool first;
 
-  for (i = 0, first = 1; i < nglyphs; i++)
+  for (i = 0, first = true; i < nglyphs; i++)
     {
       XChar2b char2b;
       static XCharStruct *pcm;
@@ -1000,7 +1000,7 @@ xfont_text_extents (struct font *font, unsigned int *code,
           metrics->rbearing = pcm->rbearing;
           metrics->ascent = pcm->ascent;
           metrics->descent = pcm->descent;
-          first = 0;
+          first = false;
         }
       else
         {