gnu: fltk: Update to 1.3.3.

* gnu/packages/fltk.scm (fltk): Update to 1.3.33

gnu/packages/fltk.scm

@@ -27,7 +27,7 @@ (define-module (gnu packages fltk)
 (define-public fltk
   (package
     (name "fltk")
-    (version "1.3.2")
+    (version "1.3.3")
     (source
      (origin
       (method url-fetch)
@@ -35,7 +35,7 @@ (define-public fltk
                           "/fltk-" version "-source.tar.gz"))
       (sha256
        (base32
-        "1974brlk723095vf8z72kazq1cbqr9a51kq6b0xda6zkjkgl8q0p"))))
+        "15qd7lkz5d5ynz70xhxhigpz3wns39v9xcf7ggkl0792syc8sfgq"))))
    (build-system gnu-build-system)
     (inputs
       `(("libx11" ,libx11)