[Cellular Library] Fix build warning message. (#37)

* [Cellular Library] Fix build warning message in unit test

* [Cellular Library] Correct memory estimation.

* [Cellular Library] Use stack memory instead of heap memory.

* [Cellular Library] Fix spelling error.

Author: andysun2015

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
           -G "Unix Makefiles" \
           -DCMAKE_BUILD_TYPE=Debug \
           -DBUILD_CLONE_SUBMODULES=ON \
-          -DCMAKE_C_FLAGS='--coverage -Wall -Wextra -DNDEBUG'
+          -DCMAKE_C_FLAGS='--coverage -Wall -Wextra -Werror -DNDEBUG'
           make -C build/ all
       - name: Test
         run: |