Fix deprecated usage of C-style enums

Arithmetic expressions using C-style enums trigger a warning with -Wdeprecated-enum-float-conversion.

Signed-off-by: Taylor Foxhall <[email protected]>

Author: hallfox

src/groups/mqb/mqbu/mqbu_storagekey.t.cpp

@@ -32,6 +32,7 @@
 #include <bdlde_md5.h>
 #include <bsl_set.h>
 #include <bslh_hash.h>
+#include <bsls_keyword.h>
 #include <bsls_timeutil.h>
 #include <bsls_types.h>
 
@@ -362,9 +363,7 @@ void test4_customHashUniqueness()
     // created upon insertion of objects in the map uses the default
     // allocator.
 
-    enum {
-        k_NUM_ELEMS = 10000  // 10K
-    };
+    BSLS_KEYWORD_CONSTEXPR bsl::size_t k_NUM_ELEMS = 10000;  // 10K
 
     typedef bsl::unordered_set<mqbu::StorageKey>::const_iterator CITER;
     typedef bsl::vector<mqbu::StorageKey>                        StorageKeys;
@@ -997,4 +996,4 @@ int main(int argc, char* argv[])
     TEST_EPILOG(mwctst::TestHelper::e_CHECK_GBL_ALLOC);
 }
 
-// ----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------