Fix cert-dcl16-c clang-tidy warnings.

Bug: 120614316
Test: make with WITH_TIDY=1 DEFAULT_GLOBAL_TIDY_CHECKS=-*,cert-dcl16-c
Change-Id: I4c2208ae23bfaf3950b4f7146fc2349f70c5bd1f
diff --git a/cmds/dumpsys/dumpsys.cpp b/cmds/dumpsys/dumpsys.cpp
index 5412d4d..8fbea8a 100644
--- a/cmds/dumpsys/dumpsys.cpp
+++ b/cmds/dumpsys/dumpsys.cpp
@@ -389,7 +389,7 @@
         auto time_left_ms = [end]() {
             auto now = std::chrono::steady_clock::now();
             auto diff = std::chrono::duration_cast<std::chrono::milliseconds>(end - now);
-            return std::max(diff.count(), 0ll);
+            return std::max(diff.count(), 0LL);
         };
 
         int rc = TEMP_FAILURE_RETRY(poll(&pfd, 1, time_left_ms()));