linux-next: build warning after merge of the idle tree

Hi Len, After merging the idle tree, today's linux-next build (x86_64 allmodconfig) produced this warning: arch/x86/kernel/smpboot.c: In function 'mwait_play_dead': arch/x86/kernel/smpboot.c:1370:22: warning: unused variable 'c' [-Wunused-variable] Introduced by commit 69fb3676df33 ("x86 idle:

linux-next: build warning after merge of the idle tree

Hi Len, After merging the idle tree, today's linux-next build (x86_64 allmodconfig) produced this warning: arch/x86/kernel/smpboot.c: In function 'mwait_play_dead': arch/x86/kernel/smpboot.c:1370:22: warning: unused variable 'c' [-Wunused-variable] Introduced by commit 69fb3676df33 (x86 idle: