Create a propper stub for oleaut32.VarMod.

diff --git a/dlls/oleaut32/oleaut32.spec b/dlls/oleaut32/oleaut32.spec
index ce99438..b3f57bc 100644
--- a/dlls/oleaut32/oleaut32.spec
+++ b/dlls/oleaut32/oleaut32.spec
@@ -150,7 +150,7 @@
 152 stub VarEqv # stdcall (ptr ptr ptr)
 153 stub VarIdiv # stdcall (ptr ptr ptr)
 154 stub VarImp # stdcall (ptr ptr ptr)
-155 stub VarMod # stdcall (ptr ptr ptr)
+155 stdcall VarMod(ptr ptr ptr)
 156 stdcall VarMul(ptr ptr ptr)
 157 stdcall VarOr(ptr ptr ptr)
 158 stub VarPow # stdcall (ptr ptr ptr)
diff --git a/dlls/oleaut32/variant.c b/dlls/oleaut32/variant.c
index fcd6628..b550d5b 100644
--- a/dlls/oleaut32/variant.c
+++ b/dlls/oleaut32/variant.c
@@ -6265,3 +6265,13 @@
     }
     return rc;
 }
+
+/**********************************************************************
+ *              VarMod [OLEAUT32.154]
+ *
+ */
+HRESULT WINAPI VarMod(LPVARIANT left, LPVARIANT right, LPVARIANT result)
+{
+    FIXME("%p %p %p\n", left, right, result);
+    return E_FAIL;
+}