src/Vulkan/Debug: Add scope for case block

This block declares variables, so should be scoped.

Bug: b/145351270
Change-Id: I90b750a81f4ff93f1c618a2ae969fa321961673c
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/39311
Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Vulkan/Debug/Value.cpp b/src/Vulkan/Debug/Value.cpp
index 02ad6f9..788e1db 100644
--- a/src/Vulkan/Debug/Value.cpp
+++ b/src/Vulkan/Debug/Value.cpp
@@ -56,6 +56,7 @@
 	case Kind::Ptr:
 		return std::to_string(reinterpret_cast<uintptr_t>(get()));
 	case Kind::VariableContainer:
+	{
 		auto const* vc = static_cast<const VariableContainer*>(this);
 		std::string out = "";
 		auto subfmt = *fmt.subListFmt;
@@ -71,6 +72,7 @@
 		});
 		return fmt.listPrefix + out + fmt.listSuffix;
 	}
+	}
 	return "";
 }