MIPS: build fix for r19380

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 1a3f33659854f404a6588caf0aed39ae58797812..4b3107fec70c7fb78a9b72bb440406b8590a4554 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -5708,8 +5708,12 @@ void CallApiFunctionStub::Generate(MacroAssembler* masm) {
   MemOperand context_restore_operand(
       fp, (2 + FCA::kContextSaveIndex) * kPointerSize);
   // Stores return the first js argument.
-  int return_value_offset =
-      2 + (is_store ? FCA::kArgsLength : FCA::kReturnValueOffset);
+  int return_value_offset = 0;
+  if (is_store) {
+    return_value_offset = 2 + FCA::kArgsLength;
+  } else {
+    return_value_offset = 2 + FCA::kReturnValueOffset;
+  }
   MemOperand return_value_operand(fp, return_value_offset * kPointerSize);
 
   __ CallApiFunctionAndReturn(api_function_address,