20001122-1.c: Fix GCC 4.6 build warning

Fix:
20001122-1.c: In function 'fpu_post_test_math1':
20001122-1.c:37:22: warning: variable 'p' set but not used [-Wunused-but-set-variable]

Signed-off-by: Stefan Roese <sr@denx.de>

post/lib_powerpc/fpu/20001122-1.c

@@ -34,12 +34,11 @@ GNU_FPOST_ATTR
 
 int fpu_post_test_math1 (void)
 {
-	volatile double a, *p;
+	volatile double a;
 	double c, d;
 	volatile double b;
 
 	d = 1.0;
-	p = &b;
 
 	do
 	{