Description of problem:
I attempted to run `ninja coverage` against libmodulemd using meson, configured with `-Db_coverage=true`.

Version-Release number of selected component:
gcovr-3.3-6.fc28

Additional info:
reporter:       libreport-2.9.4
cmdline:        /usr/bin/python3 -s /usr/bin/gcovr -x -r /home/sgallagh/workspace/libmodulemd -o /home/sgallagh/workspace/libmodulemd/x86_64/meson-logs/coverage.xml
crash_function: process_gcov_data
exception_type: ValueError
executable:     /usr/bin/gcovr
interpreter:    python3-3.6.5-1.fc28.x86_64
kernel:         4.16.1-300.fc28.x86_64
runlevel:       N 5
type:           Python3
uid:            13041

Truncated backtrace:
gcovr:632:process_gcov_data:ValueError: invalid literal for int() with base 10: '2605*'

Traceback (most recent call last):
  File "/usr/bin/gcovr", line 2318, in <module>
    process_datafile(file_, covdata, options)
  File "/usr/bin/gcovr", line 897, in process_datafile
    process_gcov_data(fname, covdata, abs_filename, options)
  File "/usr/bin/gcovr", line 632, in process_gcov_data
    covered[lineno] = int(segments[0].strip())
ValueError: invalid literal for int() with base 10: '2605*'

Local variables in innermost frame:
code: ''
is_code_statement: True
tmp: '2605*'
last_code_line_excluded: False
last_code_lineno: 103
last_code_line: '\n'
lineno: 104
branches: {}
covered: {}
uncovered_exceptional: set()
uncovered: set()
noncode: {32, 65, 34, 66, 36, 69, 70, 102, 72, 103, 74, 24, 63}
excluding: []
i: 0
filtered_fname: 'x86_64/modulemd/modulemd@sha/modulemd-module.c'
fname: '/home/sgallagh/workspace/libmodulemd/x86_64/modulemd/modulemd@sha/modulemd-module.c'
root_dir: '/home/sgallagh/workspace/libmodulemd'
currdir: '/home/sgallagh/workspace/libmodulemd/x86_64'
segments: ['    2605*', '  104', 'G_DEFINE_TYPE (ModulemdModule, modulemd_module, G_TYPE_OBJECT)\n']
line: '    2605*:  104:G_DEFINE_TYPE (ModulemdModule, modulemd_module, G_TYPE_OBJECT)\n'
INPUT: <_io.TextIOWrapper name='^#modulemd#modulemd-module.c.gcov' mode='r' encoding='UTF-8'>
options: <Values at 0x7f980b377cf8: {'version': False, 'verbose': False, 'objdir': None, 'output': '/home/sgallagh/workspace/libmodulemd/x86_64/meson-logs/coverage.xml', 'keep': False, 'delete': False, 'filter': [re.compile('\\/home\\/sgallagh\\/workspace\\/libmodulemd\\/')], 'exclude': [], 'gcov_filter': re.compile(''), 'gcov_exclude': [], 'root': '/home/sgallagh/workspace/libmodulemd', 'xml': True, 'prettyxml': False, 'html': False, 'html_details': False, 'relative_anchors': True, 'show_branch': None, 'sort_uncovered': None, 'sort_percent': None, 'gcov_cmd': 'gcov', 'exclude_unreachable_branches': False, 'exclude_dirs': [], 'gcov_files': False, 'print_summary': False, 'root_filter': re.compile('\\/home\\/sgallagh\\/workspace\\/libmodulemd\\/')}>
source_fname: '/home/sgallagh/workspace/libmodulemd/x86_64/modulemd/modulemd@sha/modulemd-module.c.gcda'
covdata: {}
data_fname: '^#modulemd#modulemd-module.c.gcov'