Realloc update.

diff --git a/zfile.cpp b/zfile.cpp
index 0eb4f0eebd31345bed067ee19ca642de51ee9490..59c3618d8340df3f1c60d4ac9521c19c5e4b5faf 100644 (file)
--- a/zfile.cpp
+++ b/zfile.cpp
@@ -2250,13 +2250,11 @@ size_t zfile_fwrite (const void *b, size_t l1, size_t l2, struct zfile *z)
                        return 0;
                }
                if (off > z->allocsize) {
-                       if (z->allocsize < off)
-                               z->allocsize = off;
-                       z->allocsize += z->size / 2;
-                       if (z->allocsize < 10000)
-                               z->allocsize = 10000;
+                       int inc = (z->size / 2 + l1 * l2 + 7) & ~3;
+                       if (inc < 10000)
+                               inc = 10000;
+                       z->allocsize += inc;
                        z->data = xrealloc (uae_u8, z->data, z->allocsize);
-                       z->datasize = z->size = off;
                }
                memcpy (z->data + z->seek, b, l1 * l2);
                z->seek += l1 * l2;