Fix #25.

src/dfmt.d

@@ -320,7 +320,7 @@ private:
                     if (next.type == tok!";" || next.type == tok!"("
                         || next.type == tok!")" || next.type == tok!","
                         || next.type == tok!"{" || next.type == tok!"."
-                        || next.type == tok!":")
+                        || next.type == tok!":" || next.type == tok!"*")
                     {
                         writeToken();
                     }

tests/issue0025.d

@@ -0,0 +1,2 @@
+complex_t opMul(real y) {
+	return this*complex_t(y);}

tests/issue0025.d.ref

@@ -0,0 +1,4 @@
+complex_t opMul(real y)
+{
+    return this * complex_t(y);
+}