stlink: remove unused assignment

Fix a warning identified by clang 7.0.1:
stlink_usb.c:1092:3: warning: Value stored to 'p' is never read
	p += sprintf(p, "S%d", swim);
	^    ~~~~~~~~~~~~~~~~~~~~~~~

Change-Id: Ic9da57e19ceecb0e3d65d3ea3412a05e1c2c779a
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4945
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

diff --git a/src/jtag/drivers/stlink_usb.c b/src/jtag/drivers/stlink_usb.c
index 1a3cc6154b5bbac47c0cca10acc11f7df0caa22e..a9ee44d9201d322090055404dfcf2f325f57a8bd 100644 (file)
--- a/src/jtag/drivers/stlink_usb.c
+++ b/src/jtag/drivers/stlink_usb.c
@@ -1002,7 +1002,7 @@ static int stlink_usb_version(void *handle)
        if (bridge)
                p += sprintf(p, "B%d", bridge);
        if (swim || !msd)
-               p += sprintf(p, "S%d", swim);
+               sprintf(p, "S%d", swim);
 
        LOG_INFO("STLINK %s (API v%d) VID:PID %04X:%04X",
                v_str,