correctly quote version in confstr

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

libc/unistd/confstr.c

@@ -24,6 +24,7 @@
 
 
 #define CS_PATH "/bin:/usr/bin"
+#define QUOTEME(x) #x
 
 /* If BUF is not NULL and LEN > 0, fill in at most LEN - 1 bytes
    of BUF with the value corresponding to NAME and zero-terminate BUF.
@@ -52,9 +53,9 @@ size_t confstr (int name, char *buf, size_t len)
       string_len = sizeof("linuxthreads-x.xx");
 # elif defined __UCLIBC_HAS_THREADS_NATIVE__
 #  define __NPTL_VERSION ("NPTL " \
-		#__UCLIBC_MAJOR__ "." \
-		#__UCLIBC_MINOR__ "." \
-		#__UCLIBC_SUBLEVEL__)
+		QUOTEME(__UCLIBC_MAJOR__) "." \
+		QUOTEME(__UCLIBC_MINOR__) "." \
+		QUOTEME(__UCLIBC_SUBLEVEL__) )
       string = __NPTL_VERSION;
       string_len = sizeof(__NPTL_VERSION);
 # endif