Recent versions of lcov may raise the following errors during
make coverage:

    genhtml: ERROR: (corrupt) unable to read trace file 'elfutils.lcov':
    genhtml: ERROR: (inconsistent) [...] line is hit but no branches on line 
have been evaluated.

Add "inconsistent,corrupt" to the --ignore-errors list so that
make coverage exits without error.

Signed-off-by: Aaron Merey <ame...@redhat.com>
---
 Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 76e98f60..fa6fda34 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -70,7 +70,7 @@ coverage: $(COVERAGE_OUTPUT_INDEX_HTML)
 if LCOV_OLD
 ignore_errors =
 else
-ignore_errors = --ignore-errors empty,negative
+ignore_errors = --ignore-errors empty,negative,inconsistent,corrupt
 endif
 
 $(COVERAGE_OUTPUT_INDEX_HTML): $(COVERAGE_OUTPUT_FILE)
-- 
2.50.1

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