Add additional test for multiline with comments

Author: facchinm

src/arduino.cc/builder/test/sketch_with_multiline_prototypes/sketch_with_multiline_prototypes.ino

@@ -6,6 +6,7 @@ void setup() {
 	test7();
 	test8();
 	test9(42, 42);
+	test10(0,0,0);
 }
 
 void myctagstestfunc(int a,
@@ -44,4 +45,9 @@ test8() {}
  void 
  /* comment */
  test9(int a, 
-    int b) {} 
+    int b) {} 
+
+void test10(int a, // this 
+			int b, // doesn't 
+			int c  // work
+			) {}