Fix warnings

Author: rivera-ernesto

Source/AMBTableViewController.h

@@ -135,7 +135,7 @@ typedef NSString * (^AMBTableViewSectionTitleBlock)(AMBTableViewSection * sectio
 
 /// A block where any aspect of the section can be changed and rows can set to be shown/hidden,
 /// reloaded, etc.
-/// @param The section to be updated.
+/// @param section The section to be updated.
 typedef void (^AMBTableViewSectionUpdateBlock) (AMBTableViewSection * section);
 
 /// Calculate the height of the cell corresponding to a given section object.

Source/AMBTableViewController.m

@@ -437,7 +437,7 @@ - (NSString *)description
 
 - (void)setObjects:(NSArray *)objects
 {
-    _mutableObjects = [NSMutableArray arrayWithArray:objects];
+    _mutableObjects = objects ? [NSMutableArray arrayWithArray:objects] : [NSMutableArray new];
     _hiddenObjectsMutableIndexSet = [NSMutableIndexSet indexSet];
     [self updateVisibleObjects];