--- a/src/dmzlib.c	Mon Mar 02 04:13:56 2015 +0200
+++ b/src/dmzlib.c	Mon Mar 02 04:17:30 2015 +0200
@@ -325,7 +325,7 @@
         }
         else
         {
-            Uint8 *p;
+            Uint8 *ptr;
             int len, dist;
             if (z == 256)
             {
@@ -352,21 +352,23 @@
                     "Bad Huffman block distance.\n");
             }
 
+            // Check if output buffer needs to expand
             if (outBuffer + len > ctx->outBufferEnd)
             {
                 if ((ret = dmZLibExpand(ctx, outBuffer, len)) != DMERR_OK)
                     return ret;
                 outBuffer = ctx->outBuffer;
             }
-            p = (Uint8 *) (outBuffer - dist);
+
+            ptr = outBuffer - dist;
             if (dist == 1)
             {                   // run of one byte; common in images.
-                Uint8 v = *p;
+                Uint8 v = *ptr;
                 do { *outBuffer++ = v; } while (--len);
             }
             else
             {
-                do { *outBuffer++ = *p++; } while (--len);
+                do { *outBuffer++ = *ptr++; } while (--len);
             }
         }
     }
@@ -526,6 +528,7 @@
                 "Read past buffer, probably corrupt compressed data.\n");
         }
 
+        // Check if output buffer needs to expand
         if (ctx->outBuffer + len > ctx->outBufferEnd &&
             (ret = dmZLibExpand(ctx, ctx->outBuffer, len)) != DMERR_OK)
         {
@@ -534,6 +537,7 @@
                 ret, dmErrorStr(ret));
         }
 
+        // Copy uncompressed data
         memcpy(ctx->outBuffer, ctx->inBuffer, len);
         ctx->inBuffer  += len;
         ctx->outBuffer += len;