correct Windows registry key in s_file.c

pd/src/s_file.c

@@ -181,7 +181,7 @@ static int sys_getpreference(const char *key, char *value, int size)
     HKEY hkey;
     DWORD bigsize = size;
     LONG err = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
-        "Software\\Pd-extended", 0,  KEY_QUERY_VALUE, &hkey);
+        "Software\\Purr-Data", 0,  KEY_QUERY_VALUE, &hkey);
     if (err != ERROR_SUCCESS)
     {
         return (0);
@@ -208,7 +208,7 @@ static void sys_putpreference(const char *key, const char *value)
 {
     HKEY hkey;
     LONG err = RegCreateKeyEx(HKEY_LOCAL_MACHINE,
-        "Software\\Pd-extended", 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE,
+        "Software\\Purr-Data", 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE,
         NULL, &hkey, NULL);
     if (err != ERROR_SUCCESS)
     {