Bug #1251

- #1251 tests should sanitize TASKDATA and TASKRC env vars (thanks to Jakub
  Wilk).

test/uri.t.cpp

@@ -28,6 +28,7 @@
 #include <cmake.h>
 #include <iostream>
 #include <sstream>
+#include <stdlib.h>
 #include <Context.h>
 #include <Uri.h>
 #include <test.h>
@@ -39,6 +40,10 @@ int main (int argc, char** argv)
 {
   UnitTest t (54);
 
+  // Ensure environment has no influence.
+  unsetenv ("TASKDATA");
+  unsetenv ("TASKRC");
+
   Uri uri1 ("asfd://user@host/folder/");
   uri1.parse ();
   t.is (uri1._user,      "user",    "Uri::parse() : asdf://user@host/folder/");