Bug #1251

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

test/text.t.cpp

@@ -27,6 +27,7 @@
 
 #include <cmake.h>
 #include <iostream>
+#include <stdlib.h>
 #include <main.h>
 #include <text.h>
 #include <utf8.h>
@@ -39,6 +40,10 @@ int main (int argc, char** argv)
 {
   UnitTest t (264);
 
+  // Ensure environment has no influence.
+  unsetenv ("TASKDATA");
+  unsetenv ("TASKRC");
+
   // void wrapText (std::vector <std::string>& lines, const std::string& text, const int width, bool hyphenate)
   std::string text = "This is a test of the line wrapping code.";
   std::vector <std::string> lines;