Nikolay Sivov : oleaut32: Fully initialize VarMod() return value for Empty % x case.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: bda6decd473f0dd5a32ed6fe4a6cc55ab7a14bad
URL:    https://gitlab.winehq.org/wine/wine/-/commit/bda6decd473f0dd5a32ed6fe4a6cc55...

Author: Nikolay Sivov 
Date:   Sun Nov 26 23:29:32 2023 +0100

oleaut32: Fully initialize VarMod() return value for Empty % x case.

---

dlls/oleaut32/tests/vartest.c | 3 ++-
 dlls/oleaut32/variant.c       | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/oleaut32/tests/vartest.c b/dlls/oleaut32/tests/vartest.c
index cf93e4cd5fc..c2b5b4113d7 100644
--- a/dlls/oleaut32/tests/vartest.c
+++ b/dlls/oleaut32/tests/vartest.c
@@ -3513,7 +3513,8 @@ static void test_Mod( int line, VARIANT *left, VARIANT *right, VARIANT *expected
     VARIANT result;
     HRESULT hres;

-    memset( &result, 0, sizeof(result) );
+    V_VT(&result) = 15;
+    V_I4(&result) = 0x12345;
     hres = pVarMod( left, right, &result );
     ok_(__FILE__,line)( hres == expres, "wrong result %lx/%lx\n", hres, expres );
     if (hres == S_OK)
diff --git a/dlls/oleaut32/variant.c b/dlls/oleaut32/variant.c
index b3c96b18c2b..9e1fefe9705 100644
--- a/dlls/oleaut32/variant.c
+++ b/dlls/oleaut32/variant.c
@@ -5499,6 +5499,7 @@ HRESULT WINAPI VarMod(LPVARIANT left, LPVARIANT right, LPVARIANT result)
       if(V_VT(left) == VT_EMPTY)
       {
    V_VT(result) = VT_I4;
+        V_I4(result) = 0;
         rc = S_OK;
         goto end;
       }