build regression with registry changes

[Dave Airlie]

-DROOTLESS_SAFEALPHA -DNO_ALLOCA -c dispatch.c  -fno-common -DPIC -o
.libs/dispatch.o
dispatch.c:421:43: error: implicit declaration of function
'LookupMajorName' is invalid in C99
[-Werror,-Wimplicit-function-declaration,Semantic Issue]
                    XSERVER_REQUEST_START(LookupMajorName(client->majorOp),
                                          ^
./Xserver-dtrace.h:73:108: note: expanded from macro 'XSERVER_REQUEST_START'
        __dtrace_probe$Xserver$request__start$v1$63686172202a$75696e74385f74$75696e7431365f74$696e74$766f6964202a(arg0,
arg1, arg2, arg3, arg4); \

                                           ^
dispatch.c:421:43: warning: incompatible integer to pointer conversion
passing 'int' to parameter of type 'const char *'
[-Wint-conversion,Value Conversion Issue]
                    XSERVER_REQUEST_START(LookupMajorName(client->majorOp),
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Xserver-dtrace.h:73:108: note: expanded from macro 'XSERVER_REQUEST_START'

http://tinderbox.x.org/builds/2014-09-19-0003/logs/xserver/#build

Dave.