core: run command and check return code on same line in tools scripts

tools/build-debian.sh

@@ -111,8 +111,7 @@ test_patches ()
     PATCHES_ERROR=0
     for file in "${ROOT_DIR}"/tools/debian/patches/*.patch; do
         echo "=== Testing patch ${file} ==="
-        git apply --check "${file}"
-        if [ $? -eq 0 ]; then
+        if git apply --check "${file}"; then
             PATCHES_OK=$((PATCHES_OK+1))
         else
             PATCHES_ERROR=$((PATCHES_ERROR+1))

tools/build-test.sh

@@ -71,8 +71,7 @@ if [ "$BUILDTOOL" = "cmake" ]; then
     run "cmake .. -DENABLE_MAN=ON -DENABLE_DOC=ON -DENABLE_TESTS=ON ${BUILDARGS}"
     run "make VERBOSE=1 -j$(nproc)"
     run "sudo make install"
-    run "ctest -V"
-    if [ $? -eq 0 ] && [ "$CODECOVERAGE" = "1" ]; then
+    if run "ctest -V" && [ "$CODECOVERAGE" = "1" ]; then
         run "lcov --directory . --capture --output-file coverage.info"
         run "lcov --remove coverage.info '/usr/*' --output-file coverage.info"
         run "lcov --list coverage.info"