gbfile: Change signed into unsigned for back-buffer character (gbeof).

diff --git a/gbfile.c b/gbfile.c
index 978c9e70fbe1e8f615a643c5f4bcd7dd78030a29..109845cf6bb3dceea390396c0851c95b3fcbc6a7 100644 (file)
--- a/gbfile.c
+++ b/gbfile.c
@@ -532,7 +532,7 @@ gbfeof(gbfile *file)
 
                res  = gzeof(file->handle.gz);
                if (!res) {
-                       signed char test;
+                       unsigned char test;
                        int len = gzread(file->handle.gz, &test, 1);
                        if (len == 1) {
                                /* No EOF, put the single byte back into stream */