gnu: fftw: Upgrade to 3.3.4

* gnu/packages/algebra.scm (fftw): Upgrade to 3.3.4.

gnu/packages/algebra.scm

@@ -196,14 +196,14 @@ (define-public bc
 (define-public fftw
   (package
     (name "fftw")
-    (version "3.3.3")
+    (version "3.3.4")
     (source (origin
              (method url-fetch)
              (uri (string-append "ftp://ftp.fftw.org/pub/fftw/fftw-"
                                  version".tar.gz"))
              (sha256
               (base32
-               "1wwp9b2va7vkq3ay7a9jk22nr4x5q6m37rzqy2j8y3d11c5grkc5"))))
+               "10h9mzjxnwlsjziah4lri85scc05rlajz39nqf3mbh4vja8dw34g"))))
     (build-system gnu-build-system)
     (arguments
      '(#:configure-flags '("--enable-shared" "--enable-openmp")