NFC: use array init instead of memset

src/wasm/module-decoder.cc

Index: src/wasm/module-decoder.cc
diff --git a/src/wasm/module-decoder.cc b/src/wasm/module-decoder.cc
index 4653e1d44bd7b53b145afb4bc8fbf8843231f6af..01df66a2dc3b363babfeedcea0d090f69650ddb5 100644
--- a/src/wasm/module-decoder.cc
+++ b/src/wasm/module-decoder.cc
@@ -51,8 +51,7 @@ class ModuleDecoder : public Decoder {
     module->mem_external = false;
     module->origin = origin_;
 
-    bool sections[kMaxModuleSectionCode];
-    memset(sections, 0, sizeof(sections));
+    bool sections[kMaxModuleSectionCode] = {false};
 
     const byte* pos = pc_;
     uint32_t magic_word = consume_u32("wasm magic");