BTextView::FreeRunArray() now accepts a NULL pointer too (like free())

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19937 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/TextView.cpp

@@ -2506,6 +2506,9 @@ BTextView::CopyRunArray(const text_run_array *orig, int32 countDelta)
 void
 BTextView::FreeRunArray(text_run_array *array)
 {
+	if (array == NULL)
+		return;
+
 	// Call destructors explicitly
 	for (int32 i = 0; i < array->count; i++)
 		array->runs[i].font.~BFont();