viml/profile: cast os_hrtime() result

Temporary measure to avoid QuickBuild CI failure:

    8:42:54,702 INFO  - Executing post-execute action...
    18:42:54,702 ERROR - Step 'master>buildall>build-node?testNode=freebsd-64>build-and-run-tests>build-and-run-tests-parameterized?buildType=Release>configure-neovim-and-build-nvim' is failed: Failed to run command: mkdir -p build/Release && cd build/Release && cmake -G "Unix Makefiles" -DBUSTED_OUTPUT_TYPE=TAP -DMIN_LOG_LEVEL=3 -DCMAKE_BUILD_TYPE=Release -DTRAVIS_CI_BUILD=ON ../.. && gmake VERBOSE=1 nvim unittest-prereqs functionaltest-prereqs
    Command return code: 2
    Command error output: /usr/home/quickbuild/buildagent/workspace/root/neovim/pull-requests-automated/src/nvim/profile.c:70:27: error: implicit conversion changes signedness: 'proftime_T' (aka 'long') to 'unsigned long' [-Werror,-Wsign-conversion]
    STRICT_ADD(os_hrtime(), nsec, &rv, int64_t);
    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
    /usr/home/quickbuild/buildagent/workspace/root/neovim/pull-requests-automated/src/nvim/assert.h:150:26: note: expanded from macro 'STRICT_ADD'
    do { *(c) = (t)((a) + (b)); } while (0)
    ^
    1 error generated.
    gma...

1 files changed, 3 insertions, 1 deletions

diff --git a/src/nvim/profile.c b/src/nvim/profile.c
index e486095fe7..52e03c895e 100644
--- a/src/nvim/profile.c
+++ b/src/nvim/profile.c
@@ -66,8 +66,10 @@ proftime_T profile_setlimit(int64_t msec) FUNC_ATTR_WARN_UNUSED_RESULT
   }
   assert(msec <= (INT64_MAX / 1000000LL) - 1);
   proftime_T nsec = msec * 1000000LL;
+  uint64_t now = os_hrtime();
+  assert(now <= INT64_MAX);
   int64_t rv;
-  STRICT_ADD(os_hrtime(), nsec, &rv, int64_t);
+  STRICT_ADD((proftime_T)now, nsec, &rv, int64_t);
   return rv;
 }