Merge pull request #446 from geoffw0/minor-corrections

CPP: Minor corrections to examples

cpp/ql/src/Critical/InconsistentNullnessTesting.cpp

@@ -1,10 +1,10 @@
 void* f() {
-	block = malloc(BLOCK_SIZE);
+	block = (MyBlock *)malloc(sizeof(MyBlock));
 	if (block) { //correct: block is checked for nullness here
 		block->id = NORMAL_BLOCK_ID;
 	}
 	//...
 	/* make sure data-portion is null-terminated */
-	block[BLOCK_SIZE - 1] = '\0'; //wrong: block not checked for nullness here
+	block->data[BLOCK_SIZE - 1] = '\0'; //wrong: block not checked for nullness here
 	return block;
 }

cpp/ql/src/Critical/OverflowCalculated.cpp

@@ -1,5 +1,5 @@
 void f(char* string) {
-	// wrong: allocates space for characters, put not zero terminator
+	// wrong: allocates space for characters, but not zero terminator
 	char* buf = malloc(strlen(string));
 	strcpy(buf, string);