Account for single page allocations. They aren't used anywhere right now because

the bin sizes ensure that when hitting this case it always allocates multiple
pages. This makes it more flexible for other use cases though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33726 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/heap.cpp

@@ -1296,13 +1296,15 @@ heap_allocate_contiguous_pages(heap_allocator *heap, uint32 pageCount)
 				continue;
 			}
 
-			if (first > 0) {
+			if (first < 0)
+				first = i;
+
+			if (first >= 0) {
 				if ((i + 1 - first) == pageCount) {
 					found = true;
 					break;
 				}
-			} else
-				first = i;
+			}
 		}
 
 		if (!found) {

src/system/libroot/posix/malloc_debug/heap.cpp

@@ -925,13 +925,15 @@ heap_allocate_contiguous_pages(heap_allocator *heap, uint32 pageCount)
 				continue;
 			}
 
-			if (first > 0) {
+			if (first < 0)
+				first = i;
+
+			if (first >= 0) {
 				if ((i + 1 - first) == pageCount) {
 					found = true;
 					break;
 				}
-			} else
-				first = i;
+			}
 		}
 
 		if (!found) {