[Nix] Update autoPatchelf use for nixos 19.03

nix/default.nix

@@ -229,7 +229,7 @@ rec {
                 sed -i src/plugins/pathcrawler/extern/eclipseCLP/RUNME -e "s/chmod 2755/chmod 755/g"
                 rm src/plugins/pathcrawler/extern/eclipseCLP/lib/x86_64_linux/dbi_mysql.so
                 rm src/plugins/pathcrawler/extern/eclipseCLP/lib/x86_64_linux/ic.so
-                prefix="src/plugins/pathcrawler" autoPatchelf
+                autoPatchelf src/plugins/pathcrawler
                 make -j 4
                 ln -sr src/plugins/pathcrawler/share share/pc
                 make tests -j4 PTESTS_OPTS="-error-code -j 4"