fixed a bug in the close() handler

qse/configure

@@ -1599,7 +1599,7 @@ Optional Features:
   --enable-wchar          use wchar_t a default charater type when enabled
                           (default. yes)
   --enable-syscall        use the syscall() function to call system calls
-                          (default. yes)
+                          (default. no)
   --enable-debug          build the library in the debug mode (default. no)
   --enable-objc           build the library for Objective-C if an Objective-C
                           compiler is available (default. yes)
@@ -25544,7 +25544,7 @@ fi
 if test "${enable_syscall+set}" = set; then
   enableval=$enable_syscall; enable_syscall_is=$enableval
 else
-  enable_syscall_is=yes
+  enable_syscall_is=no
 fi
 
 if test "${enable_syscall_is}" = "yes"