Fix buffer distribution step

If there are no sorted elements to distribute the buffer into, we're done.

1 files changed, 1 insertions, 1 deletions

diff --git a/common.h b/common.h
index 48f3d0c..4eb5d9c 100644
--- a/common.h
+++ b/common.h
@@ -46,7 +46,7 @@ static void rotate(char *base, size_t size, size_t shift)
 
 static void distribute_buffer(char *base, size_t bufnmel, size_t sortnmel, size_t width, cmpfun cmp)
 {
-	while (bufnmel) {
+	while (bufnmel && sortnmel) {
 		char  *sorted    = base + bufnmel * width;
 		size_t insertpos = binary_search(base, sorted, sortnmel, width, cmp);
 		if (insertpos > 0) {