proto: clean up comments.

Say "attempt to XXX", as the attempt might not succeed.

Fix a copied-and-pasted comment to reflect what
proto_is_frame_protocol() does.

Change-Id: Ia16a98064b87001f019fda43f2db2970a89e355e
Reviewed-on: https://code.wireshark.org/review/37486
Reviewed-by: Guy Harris <[email protected]>

Author: guyharris

epan/proto.c

@@ -7461,7 +7461,7 @@ proto_get_frame_protocols(const wmem_list_t *layers, gboolean *is_ip,
 	const char *proto_name;
 
 	/* Walk the list of a available protocols in the packet and
-	   find "major" ones. */
+	   attempt to find "major" ones. */
 	/* It might make more sense to assemble and return a bitfield. */
 	while (protos != NULL)
 	{
@@ -7497,8 +7497,7 @@ proto_is_frame_protocol(const wmem_list_t *layers, const char* proto_name)
 	const char *name;
 
 	/* Walk the list of a available protocols in the packet and
-	   find "major" ones. */
-	/* It might make more sense to assemble and return a bitfield. */
+	   attempt to find the specified protocol. */
 	while (protos != NULL)
 	{
 		proto_id = GPOINTER_TO_INT(wmem_list_frame_data(protos));