[wasm] Clean up on missed reviewers comments.

Bug: v8:7431
Change-Id: I80ec116d21d67868747093887ca4660675dab8e4
Reviewed-on: https://chromium-review.googlesource.com/c/1473795Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Francis McCabe <fgm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59783}

src/wasm/baseline/liftoff-compiler.cc

@@ -1863,12 +1863,12 @@ class LiftoffCompiler {
 
     __ FinishCall(imm.sig, call_descriptor);
   }
+
   void ReturnCall(FullDecoder* decoder,
                   const CallFunctionImmediate<validate>& imm,
                   const Value args[]) {
     unsupported(decoder, "return_call");
   }
-
   void ReturnCallIndirect(FullDecoder* decoder, const Value& index_val,
                           const CallIndirectImmediate<validate>& imm,
                           const Value args[]) {

src/wasm/function-body-decoder-impl.h

@@ -924,12 +924,12 @@ class WasmDecoder : public Decoder {
     return true;
   }
 
-  inline bool CanTailCall(FunctionSig* tgt_sig) {
-    if (tgt_sig == nullptr) return false;
+  inline bool CanReturnCall(FunctionSig* target_sig) {
+    if (target_sig == nullptr) return false;
     size_t num_returns = sig_->return_count();
-    if (num_returns != tgt_sig->return_count()) return false;
+    if (num_returns != target_sig->return_count()) return false;
     for (size_t i = 0; i < num_returns; ++i) {
-      if (sig_->GetReturn(i) != tgt_sig->GetReturn(i)) return false;
+      if (sig_->GetReturn(i) != target_sig->GetReturn(i)) return false;
     }
     return true;
   }
@@ -2176,7 +2176,7 @@ class WasmFullDecoder : public WasmDecoder<validate> {
           CallFunctionImmediate<validate> imm(this, this->pc_);
           len = 1 + imm.length;
           if (!this->Validate(this->pc_, imm)) break;
-          if (!this->CanTailCall(imm.sig)) {
+          if (!this->CanReturnCall(imm.sig)) {
             OPCODE_ERROR(opcode, "tail call return types mismatch");
             break;
           }
@@ -2192,7 +2192,7 @@ class WasmFullDecoder : public WasmDecoder<validate> {
           CallIndirectImmediate<validate> imm(this, this->pc_);
           len = 1 + imm.length;
           if (!this->Validate(this->pc_, imm)) break;
-          if (!this->CanTailCall(imm.sig)) {
+          if (!this->CanReturnCall(imm.sig)) {
             OPCODE_ERROR(opcode, "tail call return types mismatch");
             break;
           }