shlwapi/tests: Write-strings warnings fix.

dlls/shlwapi/ordinal.c

@@ -2281,7 +2281,7 @@ BOOL WINAPI FDSA_Destroy(FDSA_info *info)
  *
  * Insert element into an FDSA array
  */
-DWORD WINAPI FDSA_InsertItem(FDSA_info *info, DWORD where, void *block)
+DWORD WINAPI FDSA_InsertItem(FDSA_info *info, DWORD where, const void *block)
 {
     TRACE("(%p 0x%08lx %p)\n", info, where, block);
     if(where > info->num_items)

dlls/shlwapi/tests/ordinal.c

@@ -242,7 +242,7 @@ static void test_fdsa(void)
     BOOL (WINAPI *pFDSA_Initialize)(DWORD block_size, DWORD inc, FDSA_info *info, void *mem,
                                     DWORD init_blocks);
     BOOL (WINAPI *pFDSA_Destroy)(FDSA_info *info);
-    DWORD (WINAPI *pFDSA_InsertItem)(FDSA_info *info, DWORD where, void *block);
+    DWORD (WINAPI *pFDSA_InsertItem)(FDSA_info *info, DWORD where, const void *block);
     BOOL (WINAPI *pFDSA_DeleteItem)(FDSA_info *info, DWORD where);
 
     FDSA_info info;

dlls/shlwapi/tests/shreg.c

@@ -53,7 +53,7 @@ static DWORD nExpLen2;
 static const char * sEmptyBuffer ="0123456789";
 
 /* delete key and all its subkeys */
-static DWORD delete_key( HKEY hkey, LPSTR parent, LPSTR keyname )
+static DWORD delete_key( HKEY hkey, LPCSTR parent, LPCSTR keyname )
 {
     HKEY parentKey;
     DWORD ret;