mapi32: Remove superfluous casts.

dlls/mapi32/imalloc.c

@@ -78,7 +78,7 @@ static HRESULT WINAPI IMAPIMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid
     if (IsEqualIID(refiid, &IID_IUnknown) ||
         IsEqualIID(refiid, &IID_IMalloc))
     {
-        *ppvObj = (LPMALLOC) &MAPI_IMalloc;
+        *ppvObj = &MAPI_IMalloc;
         TRACE("Returning IMalloc (%p)\n", *ppvObj);
         return S_OK;
     }

dlls/mapi32/tests/imalloc.c

@@ -64,8 +64,7 @@ static void test_IMalloc(void)
 
     /* Prove that native mapi uses LocalAlloc/LocalFree */
     lpMem = IMalloc_Alloc(lpMalloc, 61);
-    ok (lpMem && IMalloc_GetSize(lpMalloc, lpMem) ==
-        LocalSize((HANDLE)lpMem),
+    ok (lpMem && IMalloc_GetSize(lpMalloc, lpMem) == LocalSize(lpMem),
         "Expected non-null, same size, got %p, %s size\n", lpMem,
         lpMem ? "different" : "same");
 

dlls/mapi32/tests/prop.c

@@ -93,11 +93,11 @@ static void test_PropCopyMore(void)
     if (!pPropCopyMore)
         return;
 
-    scode = pMAPIAllocateBuffer(sizeof(LPSPropValue), (LPVOID *)lpDest);
+    scode = pMAPIAllocateBuffer(sizeof(LPSPropValue), lpDest);
     if (FAILED(scode))
         return;
 
-    scode = pMAPIAllocateMore(sizeof(LPSPropValue), lpDest, (LPVOID *)lpSrc);
+    scode = pMAPIAllocateMore(sizeof(LPSPropValue), lpDest, lpSrc);
     if (FAILED(scode))
         return;