From Evan Huus: fix memory leak. Fixes bug 7081.

svn path=/trunk/; revision=42057

AUTHORS

@@ -3617,6 +3617,7 @@ Andras Veres-Szentkiralyi	<vsza [AT] vsza.hu>
 Jakob Hirsch 		<jh.wireshark-bugzilla [AT] plonk.de>
 Роман Донченко		<DXDragon [AT] yandex.ru>
 			<billyjeans [AT] gmail.com>
+Evan Huus		<eapache [AT] gmail.com>
 
 Dan Lasley <dlasley[AT]promus.com> gave permission for his
 dumpit() hex-dump routine to be used.

capture_sync.c

@@ -313,6 +313,9 @@ init_pipe_args(int *argc) {
     /* Make that the first argument in the argument list (argv[0]). */
     argv = sync_pipe_add_arg(argv, argc, exename);
 
+    /* sync_pipe_add_arg strdupes exename, so we should free our copy */
+    g_free(exename);
+
     return argv;
 }