msi: allow conditions to evaluate properties over 256 characters

[Aric Stewart]

Do not limit properties to 256 characters when evaluating them.
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Index: dlls/msi/cond.y
===================================================================
RCS file: /home/wine/wine/dlls/msi/cond.y,v
retrieving revision 1.15
diff -u -u -r1.15 cond.y
--- dlls/msi/cond.y	8 Feb 2005 12:13:49 -0000	1.15
+++ dlls/msi/cond.y	9 Feb 2005 11:40:39 -0000
@@ -448,14 +448,22 @@
         {
             DWORD sz;
             COND_input* cond = (COND_input*) info;
-            $$ = HeapAlloc( GetProcessHeap(), 0, 0x100*sizeof (WCHAR) );
 
-            /* Lookup the identifier */
-
-            sz=0x100;
-            if (MSI_GetPropertyW(cond->package,$1,$$,&sz) != ERROR_SUCCESS)
+            sz = 0;
+            MSI_GetPropertyW(cond->package, $1, NULL, &sz);
+            if (sz == 0)
+            {
+                $$ = HeapAlloc( GetProcessHeap(), 0 ,sizeof(WCHAR));
+                $$[0] = 0;
+            }
+            else
             {
-                $$[0]=0;
+                sz ++;
+                $$ = HeapAlloc( GetProcessHeap(), 0, sz*sizeof (WCHAR) );
+
+                /* Lookup the identifier */
+
+                MSI_GetPropertyW(cond->package,$1,$$,&sz);
             }
             HeapFree( GetProcessHeap(), 0, $1 );
         }