db: print all return values at end of function
The current code prints the return range whenever we come to a return
statement. But sometimes we just want to know what the return values are
that the function returns. That's what this change does. It combines a
list of all the return ranges and prints out the possible return values
at the end of the function.
It looks like:
fs/ntfs/super.c:541 ntfs_remount() info: function_return_values '(-30),(-22),0'
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>