[lldb] On Windows, silence warning with latest MSVC

aganea · aganea · commit 9110c2b40215 · 2024-01-17T07:23:58.000-05:00
This fixes:
```
[6083/7449] Building CXX object tools\lldb\source\Commands\CMakeFiles\lldbCommands.dir\CommandObjectFrame.cpp.obj
C:\git\llvm-project\lldb\source\Commands\CommandObjectFrame.cpp(497) : warning C4715: 'CommandObjectFrameVariable::ScopeRequested': not all control paths return a value
```
diff --git a/lldb/source/Commands/CommandObjectFrame.cpp b/lldb/source/Commands/CommandObjectFrame.cpp
@@ -494,6 +494,7 @@ may even involve JITing and running code in the target program.)");
     case eValueTypeVTableEntry:
       return false;
     }
+    llvm_unreachable("Unexpected scope value");
   }
 
   /// Finds all the variables in `all_variables` whose name matches `regex`,

Original file line number	Diff line number	Diff line change
`@@ -494,6 +494,7 @@ may even involve JITing and running code in the target program.)");`
`494`	`494`	`case eValueTypeVTableEntry:`
`495`	`495`	`return false;`
`496`	`496`	`}`
	`497`	`+ llvm_unreachable("Unexpected scope value");`
`497`	`498`	`}`
`498`	`499`
`499`	`500`	/// Finds all the variables in `all_variables` whose name matches `regex`,