check_headers: look for leading spaces as well

diff --git a/src/check_headers b/src/check_headers
index 734ad1e248a4ecd167a115cf34a122db52a724df..0e13920ccd586dabb678980a7ffc660314f89fed 100755 (executable)
--- a/src/check_headers
+++ b/src/check_headers
@@ -9,7 +9,7 @@ regexp="$(cat ../config.h.in | \
        sed -n -e 's/^#undef \([A-Z0-9_]*\)$/\1/p' | \
        grep -v 'WORDS_BIGENDIAN' | \
        xargs | \
-    sed -e 's/ /\\\| /g' | sed -e 's/\\|/\$\\|/g')"
+    sed -e 's/ /\\\(\\s\\\|$\\\)\\\| /g')"
 regexp=" $regexp\$"
 
 echo Looking for private defines in public headers...