misra.py: Rule 21.8, added missing exit() function.

addons/misra.py

@@ -1266,7 +1266,7 @@ def misra_21_7(data):
 
 def misra_21_8(data):
     for token in data.tokenlist:
-        if isFunctionCall(token) and (token.astOperand1.str in {'abort', 'getenv', 'system'}):
+        if isFunctionCall(token) and (token.astOperand1.str in {'abort', 'exit', 'getenv', 'system'}):
             reportError(token, 21, 8)
 
 

addons/test/misra-test.c

@@ -388,6 +388,7 @@ void misra_21_8() {
   abort(); // 21.8
   getenv("foo"); // 21.8
   system(""); // 21.8
+  exit(-1); // 21.8
 }
 
 void misra_21_9() {