jw.pkg.cmds: Replace split('\n') by splitlines()

splitlines() removes empty lines, so use it and save some lines of
code.

Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/cmds/distro/lib/rpm.py

@@ -26,9 +26,7 @@ async def all_installed_packages() -> Iterable[Package]:
     tag_str = '|'.join([f'%{{{tag}}}' for tag in query_tags]) + r'\n'
     opts.append(tag_str)
     package_list_str, stderr = await run_rpm('-qa', *opts, sudo=False)
-    for package_str in package_list_str.split('\n'):
-        if not package_str:
-            continue
+    for package_str in package_list_str.splitlines():
         tags = package_str.split('|')
         ret.append(Package(name=tags[0], vendor=tags[1], packager=tags[2], url=tags[3]))
     return ret

src/python/jw/pkg/cmds/projects/CmdGetAuthInfo.py

@@ -31,9 +31,7 @@ class CmdGetAuthInfo(Cmd): # export
             return
         remotes, stderr = await run_cmd('git', '-C', jw_pkg_dir, 'remote', '-v')
         result: dict[str, str] = {}
-        for line in remotes.split('\n'):
-            if re.match(r'^\s*$', line):
-                continue
+        for line in remotes.splitlines():
             name, url, typ = re.split(r'\s+', line)
             if name == 'origin' and typ in ['(pull)', '(fetch)']: # TODO: Use other remotes, too?
                 parsed = urlparse(url)