[turbofan] Gracefully bail out if OSR encounters a loop too deeply nested.

src/compiler/osr.h

Index: src/compiler/osr.h
diff --git a/src/compiler/osr.h b/src/compiler/osr.h
index 89773f0ec55ac5fb6782ba4f7eee182de83bc6ec..549bb5f96a7436cd69a867b2b0987ef8e7d4d9ee 100644
--- a/src/compiler/osr.h
+++ b/src/compiler/osr.h
@@ -99,7 +99,8 @@ class OsrHelper {
 
   // Deconstructs the artificial {OsrNormalEntry} and rewrites the graph so
   // that only the path corresponding to {OsrLoopEntry} remains.
-  void Deconstruct(JSGraph* jsgraph, CommonOperatorBuilder* common,
+  // Return {false} if the OSR deconstruction failed somehow.
+  bool Deconstruct(JSGraph* jsgraph, CommonOperatorBuilder* common,
                    Zone* tmp_zone);
 
   // Prepares the frame w.r.t. OSR.