gsm/gsm48_ie: Fix frequency list decoding
Fix-by: Andreas.Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/src/gsm/gsm48_ie.c b/src/gsm/gsm48_ie.c
index efcf281..863e636 100644
--- a/src/gsm/gsm48_ie.c
+++ b/src/gsm/gsm48_ie.c
@@ -745,7 +745,7 @@
if (w[4])
f[((w[1] - 512 + ((w[2] - 256 + w[4] - 1) % 511)) % 1023) + 1].mask |= frqt;
if (w[5])
- f[((w[1] + ((w[3] - 256 - w[5] - 1) % 511)) % 1023) + 1].mask |= frqt;
+ f[((w[1] + ((w[3] - 256 + w[5] - 1) % 511)) % 1023) + 1].mask |= frqt;
if (w[6])
f[((w[1] - 512 + ((w[2] + w[6] - 1) % 511)) % 1023) + 1].mask |= frqt;
if (w[7])