msi/tests: Fix a signed/unsigned int mismatch.

[Francois Gouget]

---
This fixes a Visual C++ 2005 warning. 

 dlls/msi/tests/automation.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/msi/tests/automation.c b/dlls/msi/tests/automation.c
index 3690462..86afcf9 100644
--- a/dlls/msi/tests/automation.c
+++ b/dlls/msi/tests/automation.c
@@ -589,7 +589,7 @@ static HRESULT invoke(IDispatch *pDispatch, LPCSTR szName, WORD wFlags, DISPPARA
     OLECHAR *name = NULL;
     DISPID dispid;
     HRESULT hr;
-    int i;
+    UINT i;
     UINT len;
 
     memset(pVarResult, 0, sizeof(VARIANT));
-- 
1.4.4.4