shithub: jbig2

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Allow for symbol dictionary with 0 symbols.

--- a/jbig2_symbol_dict.c

+++ b/jbig2_symbol_dict.c

@@ -103,7 +103,7 @@

     if (new_dict->glyphs != NULL) {

         memset(new_dict->glyphs, 0, n_symbols * sizeof(Jbig2Image *));

-    } else {

+    } else if (new_dict->n_symbols > 0) {

         jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "unable to allocate glyphs for new empty symbol dict");

         jbig2_free(ctx->allocator, new_dict);

         return NULL;