Fix undefined behaviour in data formatter test -- ensure char* null-terminated

so LLDB does not read off the end of the array.

llvm-svn: 184877

lldb/test/functionalities/data-formatter/data-formatter-advanced/main.cpp

@@ -61,8 +61,11 @@ struct SimpleWithPointers
 	SimpleWithPointers(int X, float Y, char Z) :
 	x(new int (X)),
 	y(new float (Y)),
-	z(new char (Z))
-	{}
+	z(new char[2])
+	{
+          z[0] = Z;
+          z[1] = '\0';
+        }
 };
 
 struct Couple
@@ -168,4 +171,4 @@ int main (int argc, const char * argv[])
     VeryLong a_long_guy;
     
     return 0; // Set break point at this line.
-}
+}