Set flags for lab9A correctly when building.

Author: Matir

src/lab09/CMakeLists.txt

@@ -5,7 +5,7 @@ add_executable(lab9C lab9C.cpp)
 SET_FLAGS(lab9C "-fstack-protector-all -z relro -z now")
 
 add_executable(lab9A lab9A.cpp)
-SET_FLAGS(lab9C "-fstack-protector-all -z relro -z now -fPIE -pie")
+SET_FLAGS(lab9A "-fstack-protector-all -z relro -z now -fPIE -pie")
 
 # These are the files we want to give students
 install(TARGETS lab9C lab9A DESTINATION "${RELEASE_DIR}/lab09")