Fix Windows cppcheck trailing newline and macOS uncrustify config

Two platform-specific fixes:
1. Normalize cppcheck trailing newlines on Windows (extra newline added)
2. Remove deprecated sp_balance_nested_parens option from uncrustify config
   (already have sp_paren_paren defined later in the file)

Author: pocc

tests/test_hooks.py

@@ -458,6 +458,8 @@ def run_shell_cmd(cmd_name, files, args, _, target_output, target_retcode):
         # Newer cppcheck versions include a checkers report info line
         if cmd_name == "cppcheck":
             actual = re.sub(rb"\nnofile:0:0: information: Active checkers.*\n+", b"\n", actual)
+            # Windows cppcheck adds extra trailing newline
+            actual = actual.rstrip(b"\n") + b"\n" if actual.endswith(b"\n") else actual
         # Windows clang uses return-mismatch instead of return-type
         if cmd_name in ["clang-tidy", "include-what-you-use"]:
             actual = actual.replace(b"clang-diagnostic-return-mismatch", b"clang-diagnostic-return-type")

tests/uncrustify_defaults.cfg

@@ -24,7 +24,6 @@ indent_bool_paren=0
 indent_square_nl=false
 indent_preserve_sql=false
 indent_align_assign=true
-sp_balance_nested_parens=false
 align_keep_tabs=false
 align_with_tabs=false
 align_on_tabstop=false