# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1526066543 -10800
# Node ID 97b8096f16dc686bf06a54d6aa502d96e61b8f09
# Parent  7d012e5acf5c55fd06e40509ed21e57323013d7b
Initialize the memory in growbuf.

diff -r 7d012e5acf5c -r 97b8096f16dc src/dmgrowbuf.c
--- a/src/dmgrowbuf.c	Fri May 11 20:28:48 2018 +0300
+++ b/src/dmgrowbuf.c	Fri May 11 22:22:23 2018 +0300
@@ -30,7 +30,7 @@
     buf->mingrow = mingrow;
     buf->allocated = FALSE;
 
-    if ((buf->data = dmMalloc(initial)) == NULL)
+    if ((buf->data = dmMalloc0(initial)) == NULL)
         return DMERR_MALLOC;
 
     return DMERR_OK;
@@ -74,11 +74,15 @@
 
 BOOL dmGrowBufGrow(DMGrowBuf *buf, const size_t amount)
 {
-    if (buf->data == NULL || buf->len + amount > buf->size)
+    size_t grow = (amount > buf->mingrow) ? amount : buf->mingrow;
+    if (buf->data == NULL || buf->len + grow > buf->size)
     {
-        buf->size += amount + (buf->mingrow > 0 ? buf->mingrow : 1024);
+        size_t prev = buf->size;
+        buf->size += grow;
         if ((buf->data = dmRealloc(buf->data, buf->size)) == NULL)
             return FALSE;
+
+        memset(buf->data + prev, 0, buf->size - prev);
     }
 
     return TRUE;
@@ -89,9 +93,12 @@
 {
     if (buf->data == NULL || nsize > buf->size)
     {
-        buf->size = nsize + (buf->mingrow > 0 ? buf->mingrow : 1024);
+        size_t prev = buf->size;
+        buf->size = nsize + buf->mingrow;
         if ((buf->data = dmRealloc(buf->data, buf->size)) == NULL)
             return FALSE;
+
+        memset(buf->data + prev, 0, buf->size - prev);
     }
 
     return TRUE;