[formatting] Remove all double blank lines in WASM code.

src/wasm/ast-decoder.cc

Index: src/wasm/ast-decoder.cc
diff --git a/src/wasm/ast-decoder.cc b/src/wasm/ast-decoder.cc
index 427997e8b08d691e7f75f73f0cd574ca3763479d..b8a86c357badb86cda8244c2ecb9c4d878a3cafb 100644
--- a/src/wasm/ast-decoder.cc
+++ b/src/wasm/ast-decoder.cc
@@ -386,7 +386,6 @@ class WasmDecoder : public Decoder {
   }
 };
 
-
 // A shift-reduce-parser strategy for decoding Wasm code that uses an explicit
 // shift-reduce strategy with multiple internal stacks.
 class SR_WasmDecoder : public WasmDecoder {
@@ -1499,7 +1498,6 @@ TreeResult BuildTFGraph(base::AccountingAllocator* allocator,
   return decoder.toResult<Tree*>(nullptr);
 }
 
-
 std::ostream& operator<<(std::ostream& os, const Tree& tree) {
   if (tree.pc == nullptr) {
     os << "null";