[Linker] Remove a use of StructType::setBody. NFC. (#116653)

This falls out naturally after inlining finishType into its only
remaining use.

Author: jayfoad

llvm/lib/Linker/IRMover.cpp

@@ -82,8 +82,6 @@ class TypeMapTy : public ValueMapTypeRemapper {
   Type *get(Type *SrcTy);
   Type *get(Type *SrcTy, SmallPtrSet<StructType *, 8> &Visited);
 
-  void finishType(StructType *DTy, StructType *STy, ArrayRef<Type *> ETypes);
-
   FunctionType *get(FunctionType *T) {
     return cast<FunctionType>(get((Type *)T));
   }
@@ -233,20 +231,6 @@ Error TypeMapTy::linkDefinedTypeBodies() {
   return Error::success();
 }
 
-void TypeMapTy::finishType(StructType *DTy, StructType *STy,
-                           ArrayRef<Type *> ETypes) {
-  DTy->setBody(ETypes, STy->isPacked());
-
-  // Steal STy's name.
-  if (STy->hasName()) {
-    SmallString<16> TmpName = STy->getName();
-    STy->setName("");
-    DTy->setName(TmpName);
-  }
-
-  DstStructTypesSet.addNonOpaque(DTy);
-}
-
 Type *TypeMapTy::get(Type *Ty) {
   SmallPtrSet<StructType *, 8> Visited;
   return get(Ty, Visited);
@@ -342,8 +326,17 @@ Type *TypeMapTy::get(Type *Ty, SmallPtrSet<StructType *, 8> &Visited) {
       return *Entry = Ty;
     }
 
-    StructType *DTy = StructType::create(Ty->getContext());
-    finishType(DTy, STy, ElementTypes);
+    StructType *DTy =
+        StructType::create(Ty->getContext(), ElementTypes, "", STy->isPacked());
+
+    // Steal STy's name.
+    if (STy->hasName()) {
+      SmallString<16> TmpName = STy->getName();
+      STy->setName("");
+      DTy->setName(TmpName);
+    }
+
+    DstStructTypesSet.addNonOpaque(DTy);
     return *Entry = DTy;
   }
   }