ofz#20160 Integer-overflow

since...

commit cf82475c785c47327cdc9d591d63d7a82dd1ac53
Date:   Sun Dec 8 19:46:45 2019 +0530

    tdf#114441 Changing sal_uLong to appropriate integer type in filters module

Change-Id: I1f29e764c6405bb05dfd27da06bdc08cf8ae13cc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/86947
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/filter/source/graphicfilter/itga/itga.cxx b/filter/source/graphicfilter/itga/itga.cxx
index 57c8a49..ddf2db5 100644
--- a/filter/source/graphicfilter/itga/itga.cxx
+++ b/filter/source/graphicfilter/itga/itga.cxx
@@ -715,7 +715,7 @@ bool TGAReader::ImplReadPalette()
        {
            case 0x3f :
                {
                    for ( sal_uInt16 i = 0; i < nColors; i++ )
                    for (sal_uInt32 i = 0; i < nColors; ++i)
                    {
                        mpColorMap[ i ] = ( i << 16 ) + ( i << 8 ) + i;
                    }