[1/2] user.exe16: Fix memory leak in case when HeapReAlloc fails.

[Dmitry Timoshkov]

Signed-off-by: Dmitry Timoshkov <dmitry at baikal.ru>
---
 dlls/user.exe16/user.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/user.exe16/user.c b/dlls/user.exe16/user.c
index aba797debc..4a00d58752 100644
--- a/dlls/user.exe16/user.c
+++ b/dlls/user.exe16/user.c
@@ -3245,8 +3245,11 @@ DWORD WINAPI FormatMessage16(
 
                         /* CMF - This makes a BIG assumption about va_list */
                         while ((ret = vsnprintf(b, sz, fmtstr, (va_list) argliststart)) < 0 || ret >= sz) {
+                            LPSTR new_b;
                             sz = (ret == -1 ? sz + 100 : ret + 1);
-                            b = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, b, sz);
+                            new_b = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, b, sz);
+                            if (!new_b) break;
+                            b = new_b;
                         }
                         for (x=b; *x; x++) ADD_TO_T(*x);
                         HeapFree(GetProcessHeap(), 0, b);
-- 
2.13.1