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--- a/src/bdf/bdflib.c
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+++ b/src/bdf/bdflib.c
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@@ -1,6 +1,6 @@
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/*
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* Copyright 2000 Computing Research Labs, New Mexico State University
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- * Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
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+ * Copyright 2001-2012
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* Francesco Zappa Nardelli
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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@@ -1254,7 +1254,8 @@
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ep = line + linelen;
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/* Trim the leading whitespace if it exists. */
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- *sp++ = 0;
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+ if ( *sp )
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+ *sp++ = 0;
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while ( *sp &&
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( *sp == ' ' || *sp == '\t' ) )
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sp++;
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