COMPMID-3324: Fix oclgrind warnings

Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Change-Id: Ib14d158b9c5568981835312dcd9d5b9ca116649a
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3637
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/CL/cl_kernels/batchnormalization_layer.cl b/src/core/CL/cl_kernels/batchnormalization_layer.cl
index 6f51db8..ad27aa3 100644
--- a/src/core/CL/cl_kernels/batchnormalization_layer.cl
+++ b/src/core/CL/cl_kernels/batchnormalization_layer.cl
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Arm Limited.
+ * Copyright (c) 2017-2020 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -346,9 +346,9 @@
     int c0 = z % DIM2;
     int c1 = z / DIM2;
 #else // ! defined(DIM2)
-    int c0 = 0;
+    int c0                                                                                    = 0;
 #if defined(NHWC)
-    int c1 = x;
+    int c1                                                                                    = x;
 #else  // defined(NHWC)
     int c1 = z;
 #endif // defined(NHWC)
@@ -386,7 +386,7 @@
     // Compute bias
 #if !defined(DIM2) && defined(NHWC)
     if(z == 0 && y == 0)
-#else !defined(DIM2) && defined(NHWC)
+#else  // !defined(DIM2) && defined(NHWC)
     if(x == 0 && y == 0 && c0 == 0)
 #endif // !defined(DIM2) && defined(NHWC)
     {