[PATCH] lib: fix definition of LIBNOTMUCH_CHECK_VERSION

[David Bremner]

Fix bug reported in id:20160606124522.g2y2eazhhrwjsa4h at flatcap.org

Although the C99 standard 6.10 is a little non-obvious on this point,
the docs for e.g. gcc are unambiguous. And indeed in practice with the
extra space, this code fails

#include <stdio.h>
#define foo (x) (x+1)

int main(int argc, char **argv){
  printf("%d\n",foo(1));
}
---
 lib/notmuch.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/notmuch.h b/lib/notmuch.h
index 29713ae..d4a97cb 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -93,7 +93,7 @@ NOTMUCH_BEGIN_DECLS
  * #endif
  * @endcode
  */
-#define LIBNOTMUCH_CHECK_VERSION (major, minor, micro)			\
+#define LIBNOTMUCH_CHECK_VERSION(major, minor, micro)			\
     (LIBNOTMUCH_MAJOR_VERSION > (major) ||					\
      (LIBNOTMUCH_MAJOR_VERSION == (major) && LIBNOTMUCH_MINOR_VERSION > (minor)) || \
      (LIBNOTMUCH_MAJOR_VERSION == (major) && LIBNOTMUCH_MINOR_VERSION == (minor) && \
-- 
2.8.1