Fix some compiler warnings

[wimlib] / src / lzx-comp.c

diff --git a/src/lzx-comp.c b/src/lzx-comp.c
index 9115ddf90b44a501437c86a1c4a43c63cc428094..0f120791c67fd231073e3a85a6a3672a02efe3a2 100644 (file)
--- a/src/lzx-comp.c
+++ b/src/lzx-comp.c
@@ -470,7 +470,7 @@ static int lzx_write_compressed_tree(struct output_bitstream *out,
                                if (delta < 0)
                                        delta += 17;
                                pretree_freqs[19]++;
-                               pretree_freqs[delta]++;
+                               pretree_freqs[(unsigned char)delta]++;
                                output_syms[output_syms_idx++] = 19;
                                output_syms[output_syms_idx++] = additional_bits;
                                output_syms[output_syms_idx++] = delta;
@@ -486,7 +486,7 @@ static int lzx_write_compressed_tree(struct output_bitstream *out,
                        if (delta < 0)
                                delta += 17;
 
-                       pretree_freqs[delta]++;
+                       pretree_freqs[(unsigned char)delta]++;
                        output_syms[output_syms_idx++] = delta;
                }