calling rand() without std:: qualifier after including <cstdlib>

[stephen.clamage@…]

File libs/heap/test/mutable_heap_tests.hpp includes <cstdlib> but on line 235 makes a call to rand() without the std:: qualifier. Although the code compiles using gcc, a standard-conforming compiler will not find rand() in the global namespace, and the compilation will fail (and does fail using some popular compilers).

The call should be qualified as std::rand() to allow the code to compile with all compilers.

[timblechmann]

thanks for reporting, fixed