fixed a bunch of -Wcomma warnings

reported by @rvandermeulen (#398)

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/lz4.c b/lib/lz4.c
index 0960c97..707b94c 100644
--- a/lib/lz4.c
+++ b/lib/lz4.c
@@ -616,7 +616,11 @@ _next_match:
                 *token += ML_MASK;
                 matchCode -= ML_MASK;
                 LZ4_write32(op, 0xFFFFFFFF);
-                while (matchCode >= 4*255) op+=4, LZ4_write32(op, 0xFFFFFFFF), matchCode -= 4*255;
+                while (matchCode >= 4*255) {
+                    op+=4;
+                    LZ4_write32(op, 0xFFFFFFFF);
+                    matchCode -= 4*255;
+                }
                 op += matchCode / 255;
                 *op++ = (BYTE)(matchCode % 255);
             } else