travis: curl -> wget

travis/Makefile

@@ -56,7 +56,7 @@ run-tests-linux-gcc: run-performance
 	sudo i386 chroot ${chroot} sh -c "mkdir -p /tmp/output"
 	sudo i386 chroot ${chroot} sh -c "PATH=/bin:/usr/bin:/sbin:/usr/sbin /tmp/kcov/tests/tools/run-tests /tmp/kcov/build/src/kcov /tmp/output /tmp/kcov/build-tests/ /tmp/kcov -v"
 	build/src/kcov --coveralls-id=$(TRAVIS_JOB_ID) --include-pattern=kcov --exclude-pattern=helper.cc,library.cc,html-data-files.cc /tmp/kcov-kcov build/src/kcov || true
-	bash <\(curl -s https://codecov.io/bash\) -s /tmp/kcov-kcov || true
+	bash <\(wget -s https://codecov.io/bash\) -s /tmp/kcov-kcov || true
 
 run-tests-linux-clang: build
 	tests/tools/run-tests build/src/kcov /tmp/ build-tests/ `pwd` -v