clang-tidy: Enable bugprone-implicit-widening-of

Modified code to address issues flagged by
bugprone-implicit-widening-of-multiplication-result check.

Tested: Build and unit tests passed successfully.

Change-Id: I68bae8863c9e2d57154588bfda8c1e235637dffe
Signed-off-by: Jayanth Othayoth <ojayanth@gmail.com>
diff --git a/.clang-tidy b/.clang-tidy
index cf85fa8..3542c7f 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -16,6 +16,7 @@
 bugprone-fold-init-type,
 bugprone-forward-declaration-namespace,
 bugprone-forwarding-reference-overload,
+bugprone-implicit-widening-of-multiplication-result,
 bugprone-inaccurate-erase,
 bugprone-inc-dec-in-conditions,
 bugprone-incorrect-enable-if,