Bug #7259: Various Coverity fixes.

src/xftcore.c

@@ -921,7 +921,7 @@ _XftGlyphDefault (Display *dpy, XftFont   *public)
     if (XftFontCheckGlyph (dpy, public, FcTrue, 0, missing, &nmissing))
 	glyphs_loaded = FcTrue;
     if (nmissing)
-	XftFontLoadGlyphs (dpy, public, FcTrue, missing, nmissing);
+	XftFontLoadGlyphs (dpy, public, glyphs_loaded, missing, nmissing);
     return font->glyphs[0];
 }
 

src/xftdraw.c

@@ -210,7 +210,7 @@ _XftDrawFormat (XftDraw	*draw)
 {
     XftDisplayInfo  *info = _XftDisplayInfoGet (draw->dpy, True);
 
-    if (!info->hasRender)
+    if (!info || !info->hasRender)
 	return 0;
 
     if (draw->visual == 0)

src/xftrender.c

@@ -518,7 +518,7 @@ XftGlyphFontSpecRender (Display			    *dpy,
 	    break;
 	}
     }
-    if (i == nglyphs)
+    if (i == nglyphs || !firstFont)
 	goto bail2;
     glyph = firstFont->glyphs[g];
     format = firstFont->format;

src/xftxlfd.c

@@ -128,8 +128,10 @@ XftXlfdParse (const char *xlfd_orig, FcBool ignore_scalable, FcBool complete)
     
     save = (char *) malloc (strlen (foundry) + 1);
     
-    if (!save)
+    if (!save) {
+	FcPatternDestroy (pat);
 	return 0;
+    }
 
     if (!FcPatternAddString (pat, XFT_XLFD, (FcChar8 *) xlfd_orig)) goto bail;