shlwapi/tests: Write-strings warnings fix

[Andrew Talbot]

Here is the patch as I meant to send.
---
Changelog:
    shlwapi/tests: Write-strings warnings fix.

diff -urN a/dlls/shlwapi/ordinal.c b/dlls/shlwapi/ordinal.c
--- a/dlls/shlwapi/ordinal.c	2006-06-20 22:05:17.000000000 +0100
+++ b/dlls/shlwapi/ordinal.c	2006-08-08 19:04:20.000000000 +0100
@@ -2281,7 +2281,7 @@
  *
  * 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)
diff -urN a/dlls/shlwapi/tests/ordinal.c b/dlls/shlwapi/tests/ordinal.c
--- a/dlls/shlwapi/tests/ordinal.c	2006-06-14 12:54:29.000000000 +0100
+++ b/dlls/shlwapi/tests/ordinal.c	2006-08-08 19:58:37.000000000 +0100
@@ -242,7 +242,7 @@
     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;
diff -urN a/dlls/shlwapi/tests/shreg.c b/dlls/shlwapi/tests/shreg.c
--- a/dlls/shlwapi/tests/shreg.c	2006-05-23 13:48:44.000000000 +0100
+++ b/dlls/shlwapi/tests/shreg.c	2006-08-08 20:36:07.000000000 +0100
@@ -53,7 +53,7 @@
 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;