Fixed the reporting of compilation errors.

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>

src/AST/ASTContext.cs

@@ -26,6 +26,8 @@ namespace CppSharp.AST
 
         /// Finds an existing module or creates a new one given a file path.
         public TranslationUnit FindOrCreateModule(string file)
+        {
+            if (!file.StartsWith("<"))
             {
                 try
                 {
@@ -36,6 +38,7 @@ namespace CppSharp.AST
                     // Normalization errors are expected when dealing with virtual
                     // compiler files like <built-in>.
                 }
+            }
             
             var module = TranslationUnits.Find(m => m.FilePath.Equals(file));
 

src/Core/Diagnostics.cs

@@ -129,12 +129,12 @@ namespace CppSharp
         }
 
         public static void EmitError(this IDiagnosticConsumer consumer,
-            string msg, params object[] args)
+            string msg)
         {
             var diagInfo = new DiagnosticInfo
             {
                 Kind = DiagnosticKind.Error,
-                Message = string.Format(msg, args)
+                Message = msg
             };
 
             consumer.Emit(diagInfo);

src/Generator/Driver.cs

@@ -337,8 +337,6 @@ namespace CppSharp
         }
 
         public void CompileCode()
-        {
-            try
         {
             var assemblyFile = string.IsNullOrEmpty(Options.LibraryName) ?
                 "out.dll" : Options.LibraryName + ".dll";
@@ -374,12 +372,6 @@ namespace CppSharp
             foreach (var error in errors.Where(error => !error.IsWarning))
                 Diagnostics.EmitError(error.ToString());
         }
-            catch (Exception exception)
-            {
-                Diagnostics.EmitError("Could not compile the generated source code");
-                Diagnostics.EmitMessage(exception.ToString());
-            }
-        }
 
         public void AddTranslationUnitPass(TranslationUnitPass pass)
         {