Code review suggestions

Author: hazzik

src/NHibernate/Dialect/Schema/PostgreSQLMetadata.cs

@@ -157,21 +157,21 @@ private static string NormalizeTypeNames(string typeName)
 					return "int8";
 			}
 
-			if (typeName.StartsWith("character"))
+			if (typeName.StartsWith("character", StringComparison.Ordinal))
 			{
 				return typeName.Replace("character varying", "varchar").Replace("character", "char");
 			}
 
-			if (typeName.EndsWith("with time zone"))
+			if (typeName.EndsWith(" with time zone", StringComparison.Ordinal))
 			{
 				return typeName.StartsWith("timestamp")
-					? typeName.Replace("with time zone", "").Replace("timestamp", "timestamptz").Trim()
-					: typeName.Replace("with time zone", "").Replace("time", "timetz").Trim();
+					? typeName.Replace(" with time zone", string.Empty).Replace("timestamp", "timestamptz")
+					: typeName.Replace(" with time zone", string.Empty).Replace("time", "timetz");
 			}
 
-			if (typeName.EndsWith("without time zone"))
+			if (typeName.EndsWith(" without time zone", StringComparison.Ordinal))
 			{
-				return typeName.Replace("without time zone", "").Trim();
+				return typeName.Replace(" without time zone", string.Empty);
 			}
 
 			return typeName;