More clang tidy (#908)

* Pacify clang-analyzer-unix.cstring.NullArg

* Apply some bugprone-suspicious-string-compare

* Apply some readability-simplify-boolean-expr

* Apply some readability-make-member-function-const

* Apple some bugprone-macro-parentheses

* Changed an f suffix to L for `long double`

* Applied some readability-uppercase-literal-suffix automatically

* Committing clang-format changes

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/H5SM.c b/src/H5SM.c
index 5f055bb..b09cb45 100644
--- a/src/H5SM.c
+++ b/src/H5SM.c
@@ -1079,7 +1079,7 @@ H5SM_try_share(H5F_t *f, H5O_t *open_oh, unsigned defer_flags, unsigned type_id,
     ssize_t               index_num;
     htri_t                tri_ret;
 #ifndef NDEBUG
-    unsigned deferred_type = -1u;
+    unsigned deferred_type = -1U;
 #endif
     htri_t ret_value = TRUE;