X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1811af8709aa08b4d442f34b0f714cd78c5b9f26..787d22ec24ac07aa61154eb1eea9c4183e6efcc5:/src/common/imagiff.cpp

diff --git a/src/common/imagiff.cpp b/src/common/imagiff.cpp
index affbd43967..e852c4f645 100644
--- a/src/common/imagiff.cpp
+++ b/src/common/imagiff.cpp
@@ -230,12 +230,14 @@ int wxIFFDecoder::GetTransparentColour() const { return m_image->transparent; }
 //
 bool wxIFFDecoder::CanRead()
 {
-    unsigned char buf[12] = "";
+    unsigned char buf[12];
 
-    m_f->Read(buf, 12);
-    m_f->SeekI(-12, wxFromCurrent);
+    if ( !m_f->Read(buf, WXSIZEOF(buf)) )
+        return FALSE;
+
+    m_f->SeekI(-(off_t)WXSIZEOF(buf), wxFromCurrent);
 
-    return (memcmp(buf, "FORM", 4) == 0 && memcmp(buf+8, "ILBM", 4) == 0);
+    return (memcmp(buf, "FORM", 4) == 0) && (memcmp(buf+8, "ILBM", 4) == 0);
 }
 
 
@@ -783,14 +785,9 @@ bool wxIFFHandler::SaveFile(wxImage * WXUNUSED(image),
 
 bool wxIFFHandler::DoCanRead(wxInputStream& stream)
 {
-    wxIFFDecoder *decod;
-    bool ok;
+    wxIFFDecoder decod(&stream);
 
-    decod = new wxIFFDecoder(&stream);
-    ok = decod->CanRead();
-    delete decod;
-
-    return ok;
+    return decod.CanRead();
 }
 
 #endif // wxUSE_STREAMS