From 36bb3c45312c54e7d7d49da7ebb27a831baf5cbe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Marsza=C5=82ek?=
 <1aam2am1@users.noreply.github.com>
Date: Mon, 8 Feb 2016 18:09:59 +0100
Subject: [PATCH] Added pointer checks to Android's resource stream.

This fixes issues #1056.
---
 src/SFML/System/Android/ResourceStream.cpp | 41 +++++++++++++++++++---
 1 file changed, 36 insertions(+), 5 deletions(-)

diff --git a/src/SFML/System/Android/ResourceStream.cpp b/src/SFML/System/Android/ResourceStream.cpp
index fbc1ec4fa..93280aa67 100644
--- a/src/SFML/System/Android/ResourceStream.cpp
+++ b/src/SFML/System/Android/ResourceStream.cpp
@@ -49,35 +49,66 @@ m_file (NULL)
 ////////////////////////////////////////////////////////////
 ResourceStream::~ResourceStream()
 {
-    AAsset_close(m_file);
+    if (m_file)
+    {
+        AAsset_close(m_file);
+    }
 }
 
 
 ////////////////////////////////////////////////////////////
 Int64 ResourceStream::read(void *data, Int64 size)
 {
-    return AAsset_read(m_file, data, size);
+    if (m_file)
+    {
+        return AAsset_read(m_file, data, size);
+    }
+    else
+    {
+        return -1;
+    }
 }
 
 
 ////////////////////////////////////////////////////////////
 Int64 ResourceStream::seek(Int64 position)
 {
-    return AAsset_seek(m_file, position, SEEK_SET);
+    if (m_file)
+    {
+        return AAsset_seek(m_file, position, SEEK_SET);
+    }
+    else
+    {
+        return -1;
+    }
 }
 
 
 ////////////////////////////////////////////////////////////
 Int64 ResourceStream::tell()
 {
-    return getSize() - AAsset_getRemainingLength(m_file);
+    if (m_file)
+    {
+        return getSize() - AAsset_getRemainingLength(m_file);
+    }
+    else
+    {
+        return -1;
+    }
 }
 
 
 ////////////////////////////////////////////////////////////
 Int64 ResourceStream::getSize()
 {
-    return AAsset_getLength(m_file);
+    if (m_file)
+    {
+        return AAsset_getLength(m_file);
+    }
+    else
+    {
+        return -1;
+    }
 }