valgrind warnings when compiled with gprof

[ennorehling]

I have -pg enabled in my gcc options, and get warnings like these. I suspect gprof instrumentation is to be blamed, not our code.

When running s/travis-build locally:

==19259== Use of uninitialised value of size 8 ==19259== at 0x5723570: profil_counter (profil.c:42) ==19259== by 0x567519F: ??? (in /lib/x86_64-linux-gnu/libc-2.13.so) ==19259== by 0x572341F: ??? (in /lib/x86_64-linux-gnu/libc-2.13.so) ==19259== by 0x51B755: addtoken (umlaut.c:171) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x48A3C1: init_direction (direction.c:15) ==19259== Uninitialised value was created by a stack allocation ==19259== at 0x48A378: init_direction (direction.c:11) ==19259== { <insert_a_suppression_name_here> Memcheck:Value8 fun:profil_counter obj:/lib/x86_64-linux-gnu/libc-2.13.so obj:/lib/x86_64-linux-gnu/libc-2.13.so fun:addtoken fun:addtoken fun:addtoken fun:addtoken fun:addtoken fun:addtoken fun:addtoken fun:addtoken fun:init_direction }

==19259== Use of uninitialised value of size 8 ==19259== at 0x5723570: profil_counter (profil.c:42) ==19259== by 0x567519F: ??? (in /lib/x86_64-linux-gnu/libc-2.13.so) ==19259== by 0x51B595: addtoken (umlaut.c:125) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x51B8ED: addtoken (umlaut.c:209) ==19259== by 0x4E623D: init_locale (config.c:519) ==19259== by 0x41D3EF: test_create_locale (tests.c:103) ==19259== by 0x41D410: test_create_faction (tests.c:110) ==19259== by 0x44E9E6: test_shipowner_goes_to_other_when_empty (ship.test.c:113) ==19259== by 0x51E28A: CuTestRun (CuTest.c:143) ==19259== by 0x51E8C3: CuSuiteRun (CuTest.c:289) ==19259== by 0x41BA22: RunTests (test_eressea.c:45) ==19259== Uninitialised value was created by a stack allocation ==19259== at 0x4E6107: init_locale (config.c:494) ==19259== { <insert_a_suppression_name_here> Memcheck:Value8 fun:profil_counter obj:/lib/x86_64-linux-gnu/libc-2.13.so fun:addtoken fun:addtoken fun:addtoken fun:init_locale fun:test_create_locale fun:test_create_faction fun:test_shipowner_goes_to_other_when_empty fun:CuTestRun fun:CuSuiteRun fun:RunTests }