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-rw-r--r--libqpdf/RC4.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/libqpdf/RC4.cc b/libqpdf/RC4.cc
index 4859c878..6fc25a86 100644
--- a/libqpdf/RC4.cc
+++ b/libqpdf/RC4.cc
@@ -11,7 +11,7 @@ RC4::RC4(unsigned char const* key_data, int key_len) :
}
void
-RC4::process(unsigned char* in_data, size_t len, unsigned char* out_data)
+RC4::process(unsigned char const* in_data, size_t len, unsigned char* out_data)
{
this->crypto->RC4_process(in_data, len, out_data);
}