lib: cry_free is a simple function pointer to free.

=> available for cry_free_funptr arguments.

src/standard.h

@@ -81,10 +81,10 @@ crydefine__tuple(float, tuple_float);
 #define cry_realloc(Type, Pointer, num) realloc(Pointer, sizeof(Pointer) * num)
 
 /** 
- * Crystal free macro for deallocating memory (equivalent to free(Pointer))
+ * Crystal renaming for deallocating memory (equivalent to free(Pointer))
  * @param Pointer The address of the freeing memory block
  */
-#define cry_free(Pointer) free(Pointer)
+static void (*cry_free)(pointer data) = free;
 
 /** 
  * Convenient casting operator for cleaner code similar to c++ static_cast in its appearance. 

tools/graphview.c

@@ -38,7 +38,7 @@ file_parse_red_black_tree(FILE* file)
 				if( (node = rb_tree_remove(tree, &tmp)) == 0)
 					fprintf(stderr, "Value %d is not in tree.\n", tmp);
 				else
-					rb_node_free(node, free, 0);
+					rb_node_free(node, cry_free, 0);
 
 				break;
 			default: