build/win32/vs12/gtk4-gen-srcs.props: Fix XML reference URL

Visual Studio can be picky about this, causing projects not to load.

diff --git a/build/win32/vs12/gtk4-gen-srcs.props b/build/win32/vs12/gtk4-gen-srcs.props
index 53555c3dfb1bdf31300db55b94b4b1e35645e6b0..587bc1ce2eaaf2bc26ef88663b033dcd577e61c7 100644 (file)
--- a/build/win32/vs12/gtk4-gen-srcs.props
+++ b/build/win32/vs12/gtk4-gen-srcs.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2004">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets">
     <Import Project="gtk4-build-defines.props" />
   </ImportGroup>