util: simplify close_nointr() a bit

src/shared/util.c

@@ -175,25 +175,24 @@ char* first_word(const char *s, const char *word) {
 }
 
 int close_nointr(int fd) {
-        int r;
-
         assert(fd >= 0);
-        r = close(fd);
-        if (r >= 0)
-                return r;
-        else if (errno == EINTR)
-                /*
-                 * Just ignore EINTR; a retry loop is the wrong
-                 * thing to do on Linux.
-                 *
-                 * http://lkml.indiana.edu/hypermail/linux/kernel/0509.1/0877.html
-                 * https://bugzilla.gnome.org/show_bug.cgi?id=682819
-                 * http://utcc.utoronto.ca/~cks/space/blog/unix/CloseEINTR
-                 * https://sites.google.com/site/michaelsafyan/software-engineering/checkforeintrwheninvokingclosethinkagain
-                 */
+
+        if (close(fd) >= 0)
                 return 0;
-        else
-                return -errno;
+
+        /*
+         * Just ignore EINTR; a retry loop is the wrong thing to do on
+         * Linux.
+         *
+         * http://lkml.indiana.edu/hypermail/linux/kernel/0509.1/0877.html
+         * https://bugzilla.gnome.org/show_bug.cgi?id=682819
+         * http://utcc.utoronto.ca/~cks/space/blog/unix/CloseEINTR
+         * https://sites.google.com/site/michaelsafyan/software-engineering/checkforeintrwheninvokingclosethinkagain
+         */
+        if (errno == EINTR)
+                return 0;
+
+        return -errno;
 }
 
 int safe_close(int fd) {