Whitespace fixes in STL wrappers

Lib/csharp/std_vector.i

@@ -5,9 +5,9 @@
  * C# implementation
  * The C# wrapper is made to look and feel like a C# System.Collections.Generic.List<> collection.
  *
- * Note that IEnumerable<> is implemented in the proxy class which is useful for using LINQ with 
+ * Note that IEnumerable<> is implemented in the proxy class which is useful for using LINQ with
  * C++ std::vector wrappers. The IList<> interface is also implemented to provide enhanced functionality
- * whenever we are confident that the required C++ operator== is available. This is the case for when 
+ * whenever we are confident that the required C++ operator== is available. This is the case for when
  * T is a primitive type or a pointer. If T does define an operator==, then use the SWIG_STD_VECTOR_ENHANCED
  * macro to obtain this enhanced functionality, for example:
  *
@@ -33,14 +33,14 @@
       this.Add(element);
     }
   }
-  
+
   public $csclassname(global::System.Collections.Generic.IEnumerable<$typemap(cstype, CTYPE)> c) : this() {
     if (c == null)
       throw new global::System.ArgumentNullException("c");
     foreach ($typemap(cstype, CTYPE) element in c) {
       this.Add(element);
     }
-  }  
+  }
 
   public bool IsFixedSize {
     get {
@@ -332,7 +332,7 @@
         std::vector< CTYPE >::iterator it = std::find($self->begin(), $self->end(), value);
         if (it != $self->end()) {
           $self->erase(it);
-	  return true;
+          return true;
         }
         return false;
       }