Fixed crash if there is no font installed (by no-fonts-fix patch)

Resolves: rhbz#1229991

tk-8.6.4-no-fonts-fix.patch

@@ -0,0 +1,12 @@
+diff -pruN tk8.6.4.orig/unix/tkUnixRFont.c tk8.6.4/unix/tkUnixRFont.c
+--- tk8.6.4.orig/unix/tkUnixRFont.c	2015-02-27 02:13:18.000000000 +0900
++++ tk8.6.4/unix/tkUnixRFont.c	2015-06-10 14:35:20.639365954 +0900
+@@ -259,7 +259,7 @@ InitFont(
+      */
+ 
+     set = FcFontSort(0, pattern, FcTrue, NULL, &result);
+-    if (!set) {
++    if (!set || set->nfont == 0) {
+ 	ckfree(fontPtr);
+ 	return NULL;
+     }

tk.spec

@@ -4,7 +4,7 @@
 Summary: The graphical toolkit for the Tcl scripting language
 Name: tk
 Version: %{vers}
-Release: 1%{?dist}
+Release: 2%{?dist}
 Epoch:   1
 License: TCL
 Group: Development/Languages
@@ -25,6 +25,7 @@ Patch1: tk-8.6.1-make.patch
 Patch2: tk-8.6.3-conf.patch
 # fix implicit linkage of freetype that breaks xft detection (#677692)
 Patch3: tk-8.6.1-fix-xft.patch
+Patch4: tk-8.6.4-no-fonts-fix.patch
 
 %description
 When paired with the Tcl scripting language, Tk provides a fast and powerful
@@ -49,6 +50,7 @@ The package contains the development files and man pages for tk.
 %patch1 -p1 -b .make
 %patch2 -p1 -b .conf
 %patch3 -p1 -b .fix-xft
+%patch4 -p1 -b .no-fonts-fix
 
 %build
 cd unix
@@ -113,6 +115,10 @@ sed -i -e "s|$PWD/unix|%{_libdir}|; s|$PWD|%{_includedir}/%{name}-private|" %{bu
 %{_datadir}/%{name}%{majorver}/tkAppInit.c
 
 %changelog
+* Thu Jul  2 2015 Jaroslav Škarvada <jskarvad@redhat.com> - 1:8.6.4-2
+- Fixed crash if there is no font installed (by no-fonts-fix patch)
+  Resolves: rhbz#1229991
+
 * Fri Mar 13 2015 Jaroslav Škarvada <jskarvad@redhat.com> - 1:8.6.4-1
 - New version