mscoree/tests: Catch expected exception in loadpaths.exe.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54202

dlls/mscoree/tests/loadpaths.exe.cs

@@ -16,13 +16,28 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+using System;
+
 namespace LoadPaths
 {
     public static class Test
+    {
+        public static int RunExternal()
+        {
+            return new Test2().Foo();
+        }
+    }
+
+    public static class MainClass
     {
         static int Main(string[] args)
         {
-	     return new Test2().Foo();
+            try {
+                return Test.RunExternal();
+            }
+            catch {
+                return 1;
+            }
         }
     }
 }