Enable EnsureNL for TradingView and C# lexers

lexers/c/csharp.go

@@ -13,6 +13,7 @@ var CSharp = internal.Register(MustNewLexer(
 		Filenames: []string{"*.cs"},
 		MimeTypes: []string{"text/x-csharp"},
 		DotAll:    true,
+		EnsureNL:  true,
 	},
 	Rules{
 		"root": {

lexers/t/tradingview.go

@@ -13,6 +13,7 @@ var TradingView = internal.Register(MustNewLexer(
 		Filenames: []string{"*.tv"},
 		MimeTypes: []string{"text/x-tradingview"},
 		DotAll:    true,
+		EnsureNL:  true,
 	},
 	Rules{
 		"root": {

lexers/testdata/csharp.actual

@@ -9,3 +9,5 @@ foreach (DriveInfo drive in drives)
     Console.WriteLine(dir);
   }
 }
+
+// Comment as last line should be recognised properly

lexers/testdata/csharp.expected

@@ -69,5 +69,6 @@
   {"type":"Punctuation","value":"}"},
   {"type":"Text","value":"\n"},
   {"type":"Punctuation","value":"}"},
-  {"type":"Text","value":"\n"}
+  {"type":"Text","value":"\n\n"},
+  {"type":"CommentSingle","value":"// Comment as last line should be recognised properly\n"}
 ]

lexers/testdata/tradingview.actual

@@ -10,3 +10,5 @@ plot(series=emaVal, style=circles, offset=2, linewidth=3)
 bgcolor(color=close > open ? orange :
      close != high[1] ? purple :
      na, transp=80)
+
+// Comment as last line should be recognised properly

lexers/testdata/tradingview.expected

@@ -89,5 +89,7 @@
   {"type":"Text","value":", transp"},
   {"type":"KeywordPseudo","value":"="},
   {"type":"LiteralNumber","value":"80"},
-  {"type":"Text","value":")\n"}
+  {"type":"Text","value":")\n\n"},
+  {"type":"CommentSingle","value":"// Comment as last line should be recognised properly"},
+  {"type":"Text","value":"\n"}
 ]