ADVAPI32: preserve the last error value set by the CSP in CryptAcquireContext

[Mike McCormack]

ChangeLog:
* preserve the last error value set by the CSP in CryptAcquireContext
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Index: dlls/advapi32/crypt.c
===================================================================
RCS file: /home/wine/wine/dlls/advapi32/crypt.c,v
retrieving revision 1.51
diff -u -r1.51 crypt.c
--- dlls/advapi32/crypt.c	30 Aug 2004 23:57:18 -0000	1.51
+++ dlls/advapi32/crypt.c	4 Sep 2004 01:09:44 -0000
@@ -476,6 +476,8 @@
 	}
 	/* FALLTHROUGH TO ERROR IF FALSE - CSP internal error! */
 error:
+	/* must preserve the last error returned by the CSP here */
+	r = GetLastError();
 	if (pProv)
 	{
 		FreeLibrary(pProv->hModule);
@@ -486,6 +488,7 @@
 	CRYPT_Free(provname);
 	CRYPT_Free(temp);
 	CRYPT_Free(imagepath);
+	SetLastError( r );
 	return FALSE;
 }