lib/vsprintf.c: Fix bug omitting minus sign of numbers (module_param)
Signed-off-by: NHoang-Nam Nguyen <hnguyen@de.ibm.com>
Cc: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>