hubicfuse: pull upstream fix for -fno-common tollchains

Without the change build fails on upstream gcc-10 as:

ld: /build/ccadKet8.o:/build/source/cloudfsapi.h:73: multiple definition of
`public_container'; /build/ccoYHN4x.o:/build/source/cloudfsapi.h:73: first defined here

pkgs/tools/filesystems/hubicfuse/default.nix

···
       url = "https://github.com/TurboGit/hubicfuse/commit/b460f40d86bc281a21379158a7534dfb9f283786.patch";
       sha256 = "0nqvcbrgbc5dms8fkz3brlj40yn48p36drabrnc26gvb3hydh5dl";
     })
+    # UPstream fix for build failure on -fno-common toolchains
+    (fetchpatch {
+      name = "fno-common.patch";
+      url = "https://github.com/TurboGit/hubicfuse/commit/34a6c3e57467b5f7e9befe2171bf4292893c5a18.patch";
+      sha256 = "0k1jz2h8sdhmi0srx0adbyrcrm57j4annj84yw6hdrly5hsf7bzc";
+    })
   ];
 
   nativeBuildInputs = [ pkg-config ];