Make show-license exit 0.

patch by Stefano Sabatini, stefano.sabatini-lala poste it

Originally committed as revision 10070 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -3760,7 +3760,7 @@ static void opt_show_license(void)
     "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
     );
 #endif
-    exit(1);
+    exit(0);
 }
 
 /**

ffserver.c

@@ -4439,7 +4439,7 @@ int main(int argc, char **argv)
         switch(c) {
         case 'L':
             show_license();
-            exit(1);
+            exit(0);
         case '?':
         case 'h':
             show_help();