gcc 4.8 vs x86 kernels w/o genfb

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

amd64/i386 kernels that omit "genfb" (NGENFB == 0) fail to build:

[...]
--- consinit.o ---
/x/current/src/sys/arch/x86/x86/consinit.c: In function 'consinit':
/x/current/src/sys/arch/x86/x86/consinit.c:150:35: error: variable 'fbinfo' set 
but not used [-Werror=unused-but-set-variable]
  const struct btinfo_framebuffer *fbinfo;
                                   ^
cc1: all warnings being treated as errors
*** [consinit.o] Error code 1

nbmake: stopped in /d0/build/current/obj/amd64/sys/arch/amd64/compile/SCRAPPY
1 error

Some use-case reorganization gives:

+Index: sys/arch/x86/x86/consinit.c
+===================================================================
+RCS file: /cvsroot/src/sys/arch/x86/x86/consinit.c,v
+retrieving revision 1.26
+diff -u -b -r1.26 consinit.c
+--- sys/arch/x86/x86/consinit.c        26 Jan 2014 15:49:25 -0000      1.26
++++ sys/arch/x86/x86/consinit.c        12 Mar 2014 11:17:07 -0000
+@@ -147,7 +147,6 @@
+ consinit(void)
+ {
+       const struct btinfo_console *consinfo;
+-      const struct btinfo_framebuffer *fbinfo;
+       static int initted;
+ #if (NCOM > 0)
+       int rv;
+@@ -163,11 +162,12 @@
+ #endif
+               consinfo = &default_consinfo;
+ 
+-	fbinfo = lookup_bootinfo(BTINFO_FRAMEBUFFER);
+-
+       if (!strcmp(consinfo->devname, "pc")) {
+               int error;
+ #if (NGENFB > 0)
++              const struct btinfo_framebuffer *fbinfo;
++
++              fbinfo = lookup_bootinfo(BTINFO_FRAMEBUFFER);
+               if (fbinfo && fbinfo->physaddr > 0) {
+                       if (x86_genfb_cnattach() == -1) {
+                               initted = 0;    /* defer */

--
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