PPC: [turbofan] Properly initialize OutOfLineRecordWrite.

TEST=cctest/test-api/Regress470113 --ignition
R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/1946733002
Cr-Commit-Position: refs/heads/master@{#35999}

src/compiler/ppc/code-generator-ppc.cc

@@ -175,7 +175,8 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
         value_(value),
         scratch0_(scratch0),
         scratch1_(scratch1),
-        mode_(mode) {}
+        mode_(mode),
+        must_save_lr_(!gen->frame_access_state()->has_frame()) {}
 
   OutOfLineRecordWrite(CodeGenerator* gen, Register object, int32_t offset,
                        Register value, Register scratch0, Register scratch1,