COMPMID-418 Add check and fix comments after preprocessor conditions

Change-Id: I1353fd652ee180e3931e58b4ce13d651a48c7e2c
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/79567
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
diff --git a/arm_compute/core/NEON/kernels/NEFillArrayKernel.h b/arm_compute/core/NEON/kernels/NEFillArrayKernel.h
index 8e0846e..38f8a01 100644
--- a/arm_compute/core/NEON/kernels/NEFillArrayKernel.h
+++ b/arm_compute/core/NEON/kernels/NEFillArrayKernel.h
@@ -70,4 +70,4 @@
     uint8_t         _threshold;
 };
 }
-#endif
+#endif /* __ARM_COMPUTE_NEFILLARRAYKERNEL_H__*/