Fix MSVC "not all control paths return a value" warning. NFC.

RKSimon · RKSimon · commit c10138a54f7f · 2023-05-19T10:40:14.000+01:00
diff --git a/clang/lib/Interpreter/Interpreter.cpp b/clang/lib/Interpreter/Interpreter.cpp
@@ -540,6 +540,7 @@ class RuntimeInterfaceBuilder
           E->getBeginLoc(), Args, E->getEndLoc());
     }
     }
+    llvm_unreachable("Unhandled Interpreter::InterfaceKind");
   }
 
   Interpreter::InterfaceKind VisitRecordType(const RecordType *Ty) {

Original file line number	Diff line number	Diff line change
`@@ -540,6 +540,7 @@ class RuntimeInterfaceBuilder`
`540`	`540`	`E->getBeginLoc(), Args, E->getEndLoc());`
`541`	`541`	`}`
`542`	`542`	`}`
	`543`	`+ llvm_unreachable("Unhandled Interpreter::InterfaceKind");`
`543`	`544`	`}`
`544`	`545`
`545`	`546`	`Interpreter::InterfaceKind VisitRecordType(const RecordType *Ty) {`