([NSArray +array]): Use +alloc, not _concreteClass. This

makes [NSMutableArray +array] and friends do the right thing.
([NSArray +arrayWithObjects:]): Likewise.
([NSMutableArray +arrayWithCapacity:]): Likewise.
([NSArray +arrayWithObject:]): Likewise; and fix condition on exception.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@659 72102866-910b-0410-8b05-ffd578937521

Source/NSArray.m

@@ -122,15 +122,16 @@ static Class NSMutableArray_concrete_class;
 
 + array
 {
-  return [[[[self _concreteClass] alloc] init] 
+  return [[[self alloc] init] 
 	  autorelease];
 }
 
 + arrayWithObject: anObject
 {
-  [NSException raise:NSInvalidArgumentException
-	       format:@"Tried to add nil"];
-  return [[[[self _concreteClass] alloc] initWithObjects:&anObject count:1]
+  if (anObject == nil)
+    [NSException raise:NSInvalidArgumentException
+		 format:@"Tried to add nil"];
+  return [[[self alloc] initWithObjects:&anObject count:1]
 	  autorelease];
 }
 
@@ -180,7 +181,7 @@ static Class NSMutableArray_concrete_class;
 {
   va_list ap;
   va_start(ap, firstObject);
-  self = [[[self _concreteClass] alloc] initWithObjects:firstObject rest:ap];
+  self = [[self alloc] initWithObjects:firstObject rest:ap];
   va_end(ap);
   return [self autorelease];
 }
@@ -380,7 +381,7 @@ static Class NSMutableArray_concrete_class;
 
 + arrayWithCapacity: (unsigned)numItems
 {
-  return [[[[self _mutableConcreteClass] alloc] initWithCapacity:numItems] 
+  return [[[self alloc] initWithCapacity:numItems] 
 	  autorelease];
 }