Juan Lang : iphlpapi: Don' t allocate gobs of memory if there are no non-loopback interfaces.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0502de41ae463181620ebcb956fe7d15cec5d8c3
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0502de41ae463181620ebcb956fe7d15cec5d8c3

Author: Juan Lang <juan.lang at gmail.com>
Date:   Thu Nov 15 11:06:50 2007 -0800

iphlpapi: Don't allocate gobs of memory if there are no non-loopback interfaces.

---

 dlls/iphlpapi/ifenum.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/dlls/iphlpapi/ifenum.c b/dlls/iphlpapi/ifenum.c
index 0a74ef6..36c42fe 100644
--- a/dlls/iphlpapi/ifenum.c
+++ b/dlls/iphlpapi/ifenum.c
@@ -234,12 +234,14 @@ InterfaceIndexTable *getNonLoopbackInterfaceIndexTable(void)
 
     if (indexes) {
       struct if_nameindex *p;
+      DWORD size = sizeof(InterfaceIndexTable);
 
       for (p = indexes, numInterfaces = 0; p && p->if_name; p++)
         if (!isLoopbackInterface(fd, p->if_name))
           numInterfaces++;
-      ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
-       sizeof(InterfaceIndexTable) + (numInterfaces - 1) * sizeof(DWORD));
+      if (numInterfaces > 1)
+        size += (numInterfaces - 1) * sizeof(DWORD);
+      ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
       if (ret) {
         for (p = indexes; p && p->if_name; p++)
           if (!isLoopbackInterface(fd, p->if_name))