Maelstrom: Fixed compiler warnings (5ae00)

https://github.com/libsdl-org/Maelstrom/commit/5ae00de12c17350a4af3a9b47a22638078b68bd1

From 5ae00de12c17350a4af3a9b47a22638078b68bd1 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 4 Nov 2011 19:24:42 -0400
Subject: [PATCH] Fixed compiler warnings

---
 controls.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/controls.cpp b/controls.cpp
index c6b00115..87fbcfcd 100644
--- a/controls.cpp
+++ b/controls.cpp
@@ -120,7 +120,7 @@ ControlsDialogDelegate::OnLoad()
 {
 	char name[32];
 
-	for (int i = 0; i < SDL_arraysize(m_controlKeys); ++i) {
+	for (int i = 0; (unsigned)i < SDL_arraysize(m_controlKeys); ++i) {
 		sprintf(name, "control%d", 1+i);
 		m_controlKeys[i] = m_panel->GetElement<UIElement>(name);
 		if (!m_controlKeys[i]) {
@@ -148,7 +148,7 @@ ControlsDialogDelegate::OnShow()
 		button->SetChecked(true);
 	}
 
-	for (int i = 0; i < SDL_arraysize(m_keyinuseTimers); ++i) {
+	for (int i = 0; (unsigned)i < SDL_arraysize(m_keyinuseTimers); ++i) {
 		m_keyinuseTimers[i] = 0;
 	}
 
@@ -170,7 +170,7 @@ ControlsDialogDelegate::OnHide()
 void
 ControlsDialogDelegate::OnTick()
 {
-	for (int i = 0; i < SDL_arraysize(m_keyinuseTimers); ++i) {
+	for (int i = 0; (unsigned)i < SDL_arraysize(m_keyinuseTimers); ++i) {
 		if (m_keyinuseTimers[i] && (SDL_GetTicks() - m_keyinuseTimers[i]) > 1000) {
 			m_keyinuseTimers[i] = 0;
 			ShowKeyLabel(i);