libwebp: update to 0.5.0

third_party/libwebp/utils/bit_reader_inl.h

Index: third_party/libwebp/utils/bit_reader_inl.h
diff --git a/third_party/libwebp/utils/bit_reader_inl.h b/third_party/libwebp/utils/bit_reader_inl.h
index 81427c6259b2ef1612a03463553e039ea78d5ad1..37215702d4f1a24370eb8448f6802705c1a0a7fe 100644
--- a/third_party/libwebp/utils/bit_reader_inl.h
+++ b/third_party/libwebp/utils/bit_reader_inl.h
@@ -46,7 +46,7 @@ typedef uint8_t lbit_t;
 #endif
 
 extern const uint8_t kVP8Log2Range[128];
-extern const range_t kVP8NewRange[128];
+extern const uint8_t kVP8NewRange[128];
 
 // special case for the tail byte-reading
 void VP8LoadFinalBytes(VP8BitReader* const br);
@@ -58,7 +58,7 @@ void VP8LoadFinalBytes(VP8BitReader* const br);
 static WEBP_INLINE void VP8LoadNewBytes(VP8BitReader* const br) {
   assert(br != NULL && br->buf_ != NULL);
   // Read 'BITS' bits at a time if possible.
-  if (br->buf_ + sizeof(lbit_t) <= br->buf_end_) {
+  if (br->buf_ < br->buf_max_) {
     // convert memory type to register type (with some zero'ing!)
     bit_t bits;
 #if defined(WEBP_FORCE_ALIGNED)