don't run 122 if required headers aren't found

Now that libxfs etc is optional, 122 (which compiles on the fly)
is failing if those extra headers are missing.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

122

@@ -191,7 +191,8 @@ awk '
 echo 'return 0; }' >>$cprog
 
 # create and run program
-cc -o $oprog $cprog
+cc -o $oprog $cprog >> $seq.full 2>&1 || \
+  _notrun "Could not compile test program (see end of $seq.full)"
 $oprog | _type_size_filter > $progout
 
 #