wusa: Remove string duplication helper.

programs/wusa/main.c

@@ -166,7 +166,7 @@ static BOOL create_directory(const WCHAR *path)
 
 static BOOL create_parent_directory(const WCHAR *filename)
 {
-    WCHAR *p, *path = strdupW(filename);
+    WCHAR *p, *path = wcsdup(filename);
     BOOL ret = FALSE;
 
     if (!path) return FALSE;
@@ -430,7 +430,7 @@ static struct assembly_entry *lookup_assembly(struct list *manifest_list, struct
 
 static WCHAR *get_assembly_source(struct assembly_entry *assembly)
 {
-    WCHAR *p, *path = strdupW(assembly->filename);
+    WCHAR *p, *path = wcsdup(assembly->filename);
     if (path && (p = wcsrchr(path, '.'))) *p = 0;
     return path;
 }
@@ -527,7 +527,7 @@ static WCHAR *lookup_expression(struct assembly_entry *assembly, const WCHAR *ke
     if (!wcsicmp(key, L"runtime.inf")) wcscat(path, L"\\inf");
     else if (!wcsicmp(key, L"runtime.drivers")) wcscat(path, L"\\drivers");
     else if (!wcsicmp(key, L"runtime.wbem")) wcscat(path, L"\\wbem");
-    return strdupW(path);
+    return wcsdup(path);
 }
 
 static WCHAR *expand_expression(struct assembly_entry *assembly, const WCHAR *expression)

programs/wusa/manifest.c

@@ -160,7 +160,7 @@ static WCHAR *get_xml_attribute(IXMLDOMElement *root, const WCHAR *name)
         VariantInit(&var);
         if (SUCCEEDED(IXMLDOMElement_getAttribute(root, bstr, &var)))
         {
-            ret = (V_VT(&var) == VT_BSTR) ? strdupW(V_BSTR(&var)) : NULL;
+            ret = (V_VT(&var) == VT_BSTR) ? wcsdup(V_BSTR(&var)) : NULL;
             VariantClear(&var);
         }
         SysFreeString(bstr);
@@ -554,7 +554,7 @@ struct assembly_entry *load_manifest(const WCHAR *filename)
 
     if ((entry = alloc_assembly()))
     {
-        entry->filename = strdupW(filename);
+        entry->filename = wcsdup(filename);
         entry->displayname = get_xml_attribute(root, L"displayName");
         if (iter_assembly(root, entry)) goto done;
         free_assembly(entry);

programs/wusa/wusa.h

@@ -100,14 +100,6 @@ static inline WCHAR *strdupAtoW(const char *str)
     return ret;
 }
 
-static inline WCHAR *strdupW(const WCHAR *str)
-{
-    WCHAR *ret;
-    if (!str) return NULL;
-    if ((ret = malloc((lstrlenW(str) + 1) * sizeof(WCHAR)))) lstrcpyW(ret, str);
-    return ret;
-}
-
 static inline WCHAR *strdupWn(const WCHAR *str, DWORD len)
 {
     WCHAR *ret;