misra.py: Handle spaces in directive arguments (#2532)

addons/misra.py

@@ -845,7 +845,7 @@ class Define:
         if res is None:
             return
 
-        self.args = res.group(1).split(',')
+        self.args = res.group(1).strip().split(',')
         self.expansionList = res.group(2)
 
     def __repr__(self):

addons/test/misra/misra-test.c

@@ -986,6 +986,7 @@ union misra_19_2 { }; // 19.2
 #define M_20_7_3(A)  ((A)+A) // 20.7
 #define M_20_7_4(A)  x##A // 20.10 this test was written to see there are not FPs
 #define M_20_7_5(A,B)  f(A, B) // no warning
+#define MUL(a  ,b ) ( a * b ) // 20.7
 
 #define M_20_10(a) (#a) // 20.10