Make sure chown_flag is always initialized

Suggested-by: christian@whoop.org
Resolves: #1223329

0003-Drop-root-priviledges-before-opening-first-savefile-.patch

@@ -38,11 +38,11 @@ diff --git a/tcpdump.c b/tcpdump.c
 index 2fd1617..4cbeb05 100644
 --- a/tcpdump.c
 +++ b/tcpdump.c
-@@ -1029,6 +1029,7 @@ main(int argc, char **argv)
+@@ -1029,3 +1029,4 @@ main(int argc, char **argv)
  	cap_rights_t rights;
  	int cansandbox;
  #endif	/* HAVE_CAPSICUM */
-+        int chown_flag;
++        int chown_flag = 0;
 
  #ifdef WIN32
  	if(wsockinit() != 0) return 1;

tcpdump.spec

@@ -2,7 +2,7 @@ Summary: A network traffic monitoring tool
 Name: tcpdump
 Epoch: 14
 Version: 4.7.4
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: BSD with advertising
 URL: http://www.tcpdump.org
 Group: Applications/Internet
@@ -82,6 +82,9 @@ exit 0
 %{_mandir}/man8/tcpdump.8*
 
 %changelog
+* Mon Jun 29 2015 Michal Sekletar <msekleta@redhat.com> - 14:4.7.4-3
+- prevent sefaulting by properly initializing chown_flag variable (#1223329)
+
 * Fri Jun 19 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 14:4.7.4-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild