Fix the check in bf9c7dc.

The C preprocessor sucks.

Author: alexrp

mono/mini/mini-arm.c

@@ -25,8 +25,8 @@
 #include "mono/arch/arm/arm-vfp-codegen.h"
 
 /* Sanity check: This makes no sense */
-#ifdef ARM_FPU_NONE && (ARM_FPU_VFP || ARM_FPU_VFP_HARD)
-#error "ARM_FPU_NONE and is defined while ARM_FPU_VFP/ARM_FPU_VFP_HARD is defined"
+#if defined(ARM_FPU_NONE) && (defined(ARM_FPU_VFP) || defined(ARM_FPU_VFP_HARD))
+#error "ARM_FPU_NONE is defined while one of ARM_FPU_VFP/ARM_FPU_VFP_HARD is defined"
 #endif
 
 #if defined(__ARM_EABI__) && defined(__linux__) && !defined(PLATFORM_ANDROID) && !defined(__native_client__)