cosmetics: normalize VP8GetCPUInfo checks

- use '!= NULL'
+ dec_neon/STORE_WHT: align '\'s

Change-Id: I0f0ce49bd9c58e771bafb24c51c070d5ebd77e53

src/dsp/dec.c

@@ -715,7 +715,7 @@ void VP8DspInit(void) {
   VP8SimpleHFilter16i = SimpleHFilter16i;
 
   // If defined, use CPUInfo() to overwrite some pointers with faster versions.
-  if (VP8GetCPUInfo) {
+  if (VP8GetCPUInfo != NULL) {
 #if defined(WEBP_USE_SSE2)
     if (VP8GetCPUInfo(kSSE2)) {
       VP8DspInitSSE2();

src/dsp/dec_neon.c

@@ -365,7 +365,7 @@ static void TransformDC(const int16_t* in, uint8_t* dst) {
   *dst = vgetq_lane_s32(row01.val[1], col); out += 16; \
   *dst = vgetq_lane_s32(row23.val[0], col); out += 16; \
   *dst = vgetq_lane_s32(row23.val[1], col); out += 16; \
-} while (0) \
+} while (0)
 
 static void TransformWHT(const int16_t* in, int16_t* out) {
   int32x4x2_t tmp0;  // tmp[0..7]

src/dsp/enc.c

@@ -740,7 +740,7 @@ void VP8EncDspInit(void) {
   VP8Copy4x4 = Copy4x4;
 
   // If defined, use CPUInfo() to overwrite some pointers with faster versions.
-  if (VP8GetCPUInfo) {
+  if (VP8GetCPUInfo != NULL) {
 #if defined(WEBP_USE_SSE2)
     if (VP8GetCPUInfo(kSSE2)) {
       VP8EncDspInitSSE2();

src/utils/rescaler.c

@@ -284,7 +284,7 @@ void WebPRescalerInit(WebPRescaler* const wrk, int src_width, int src_height,
   if (WebPRescalerImportRow == NULL) {
     WebPRescalerImportRow = ImportRowC;
     WebPRescalerExportRow = ExportRowC;
-    if (VP8GetCPUInfo) {
+    if (VP8GetCPUInfo != NULL) {
 #if defined(WEBP_USE_MIPS32)
       if (VP8GetCPUInfo(kMIPS32)) {
         WebPRescalerImportRow = ImportRowMIPS;