Don't throw then catch exception in Component if no componentClassName was set.

Author: ngbrown

src/NHibernate/Mapping/Component.cs

@@ -133,26 +133,26 @@ public System.Type ComponentClass
 			get
 			{
 				// NH Different implementation (we use reflection only when needed)
-				if (componentClass == null)
+				if (componentClass != null) return componentClass;
+				if (componentClassName == null) return null;
+
+				try
 				{
-					try
-					{
-						componentClass = ReflectHelper.ClassForName(componentClassName);
-					}
-					catch (Exception cnfe)
-					{
-						if (!IsDynamic) // TODO remove this if leave the Exception
-							throw new MappingException("component class not found: " + componentClassName, cnfe);
-						return null;
-					}
+					componentClass = ReflectHelper.ClassForName(componentClassName);
+				}
+				catch (Exception cnfe)
+				{
+					if (!IsDynamic) // TODO remove this if leave the Exception
+						throw new MappingException("component class not found: " + componentClassName, cnfe);
+					return null;
 				}
 				return componentClass;
 			}
 			set // TODO NH: Remove the setter
 			{
 				componentClass = value;
-				if (componentClass != null)
-					componentClassName = componentClass.AssemblyQualifiedName;
+				if (value != null)
+					componentClassName = value.AssemblyQualifiedName;
 			} 
 		}