res_format_attr_h264: Fix crash when determining joint capability.

The res_format_attr_h264 module currently incorrectly attempts to
copy SPS and PPS information from the wrong attribute. This change
fixes that.

ASTERISK-24616 #close
Reported by: Yura Kocyuba

Review: https://reviewboard.asterisk.org/r/4392/
........

Merged revisions 431521 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@431522 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_format_attr_h264.c

@@ -153,13 +153,13 @@ static struct ast_format *h264_getjoint(const struct ast_format *format1, const
 	if (attr1 && !ast_strlen_zero(attr1->SPS)) {
 		ast_copy_string(attr->SPS, attr1->SPS, sizeof(attr->SPS));
 	} else if (attr2 && !ast_strlen_zero(attr2->SPS)) {
-		ast_copy_string(attr->SPS, attr1->SPS, sizeof(attr->SPS));
+		ast_copy_string(attr->SPS, attr2->SPS, sizeof(attr->SPS));
 	}
 
 	if (attr1 && !ast_strlen_zero(attr1->PPS)) {
 		ast_copy_string(attr->PPS, attr1->PPS, sizeof(attr->PPS));
 	} else if (attr2 && !ast_strlen_zero(attr2->PPS)) {
-		ast_copy_string(attr->PPS, attr1->PPS, sizeof(attr->PPS));
+		ast_copy_string(attr->PPS, attr2->PPS, sizeof(attr->PPS));
 	}
 
 	return cloned;