rpmbuild.sh: Abort script when an error occurs

Abort early so that the real error message can be noticed easily.
==========================
$ ./rpmbuild.sh
Found CMake: /usr/bin/cmake (3.18.4)
Run-time dependency libtraceevent found: NO (tried pkgconfig and cmake)

../meson.build:147:2: ERROR: Dependency "libtraceevent" not found, tried pkgconfig and cmake

A full log can be found at /path/to/ndctl/build/meson-logs/meson-log.txt
FAILED: build.ninja
...

Signed-off-by: Li Zhijian <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vishal Verma <[email protected]>

Author: zhijianli88

rpmbuild.sh

@@ -10,7 +10,7 @@ if ./git-version | grep -q dirty; then
 	exit 1
 fi
 if [ ! -f $spec ]; then
-	meson compile -C build rhel/ndctl.spec
+	meson compile -C build rhel/ndctl.spec || exit
 	spec=$(dirname $0)/build/rhel/ndctl.spec
 fi
 ./make-git-snapshot.sh