ole32: Avoid signed-unsigned integer comparisons

[Andrew Talbot]

Changelog:
    ole32: Avoid signed-unsigned integer comparisons.

diff --git a/dlls/ole32/compositemoniker.c b/dlls/ole32/compositemoniker.c
index a6cfd62..34e1eee 100644
--- a/dlls/ole32/compositemoniker.c
+++ b/dlls/ole32/compositemoniker.c
@@ -1641,7 +1641,7 @@ EnumMonikerImpl_CreateEnumMoniker(IMoniker** tabMoniker, ULONG tabSize,
                ULONG currentPos, BOOL leftToRigth, IEnumMoniker ** ppmk)
 {
     EnumMonikerImpl* newEnumMoniker;
-    int i;
+    ULONG i;
 
     if (currentPos > tabSize)
         return E_INVALIDARG;
@@ -1672,8 +1672,8 @@ EnumMonikerImpl_CreateEnumMoniker(IMoniker** tabMoniker, ULONG tabSize,
             IMoniker_AddRef(tabMoniker[i]);
         }
     else
-        for (i=tabSize-1;i>=0;i--){
-
+        for (i = tabSize; i > 0; ){
+            --i;
             newEnumMoniker->tabMoniker[tabSize-i-1]=tabMoniker[i];
             IMoniker_AddRef(tabMoniker[i]);
         }
diff --git a/dlls/ole32/storage32.c b/dlls/ole32/storage32.c
index f259d24..1d64ab0 100644
--- a/dlls/ole32/storage32.c
+++ b/dlls/ole32/storage32.c
@@ -1767,7 +1767,7 @@ static HRESULT WINAPI StorageBaseImpl_CopyTo(
   StorageBaseImpl *This = impl_from_IStorage(iface);
 
   BOOL         skip_storage = FALSE, skip_stream = FALSE;
-  int          i;
+  DWORD        i;
 
   TRACE("(%p, %d, %p, %p, %p)\n",
 	iface, ciidExclude, rgiidExclude,
@@ -2822,7 +2822,7 @@ static HRESULT StorageImpl_Construct(
   {
     ULONG current_block = This->extBigBlockDepotStart;
     ULONG cache_size = This->extBigBlockDepotCount * 2;
-    int i;
+    ULONG i;
 
     This->extBigBlockDepotLocations = HeapAlloc(GetProcessHeap(), 0, sizeof(ULONG) * cache_size);
     if (!This->extBigBlockDepotLocations)