msi/tests: Use wide-char string literals.

dlls/msi/tests/custom.c

@@ -518,12 +518,10 @@ static void test_db(MSIHANDLE hinst)
 
     for (i = 0; i < 20; i++)
     {
-        WCHAR emptyW[1] = { 0 };
-
         r = MsiSummaryInfoSetPropertyA(suminfo, i, prop_type[i], 1252, &ft, "");
         ok(hinst, r == ERROR_FUNCTION_FAILED, "%u: got %u\n", i, r);
 
-        r = MsiSummaryInfoSetPropertyW(suminfo, i, prop_type[i], 1252, &ft, emptyW);
+        r = MsiSummaryInfoSetPropertyW(suminfo, i, prop_type[i], 1252, &ft, L"");
         ok(hinst, r == ERROR_FUNCTION_FAILED, "%u: got %u\n", i, r);
     }
 

dlls/msi/tests/record.c

@@ -56,7 +56,6 @@ static void test_msirecord(void)
     char buf[10];
     WCHAR bufW[10];
     const char str[] = "hello";
-    const WCHAR strW[] = { 'h','e','l','l','o',0};
     char filename[MAX_PATH];
 
     /* check behaviour with an invalid record */
@@ -210,7 +209,7 @@ static void test_msirecord(void)
     r = MsiRecordGetStringW(h,0,bufW,&sz);
     ok(r == ERROR_MORE_DATA, "wrong error\n");
     ok(sz == 5, "MsiRecordGetStringA returned the wrong length\n");
-    ok(0==memcmp(bufW,strW,8), "MsiRecordGetStringA returned the wrong string\n");
+    ok(!memcmp(bufW, L"hello", 8), "MsiRecordGetStringA returned the wrong string\n");
 
     sz = 0;
     bufW[0] = 'x';