Use uint8_t for qual_flags[] instead of ints.

Resulting bss reduction is ~6kbytes:

   text	   data	    bss	    dec	    hex	filename
 245703	    700	  19072	 265475	  40d03	strace.t4/strace
 245687	    700	  12928	 259315	  3f4f3	strace.t5/strace

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2 files changed