Fix rotctl \dump_caps output

rot_sprintf_status() was printing items multiple times.
Cause of problem noticed by cppcheck.

include/hamlib/rotator.h

@@ -358,6 +358,8 @@ typedef enum {
     ROT_STATUS_OVERLAP_LEFT =      (1 << 14), /*!< The azimuth rotator has rotated left (CCW) past 0 degrees. */
     ROT_STATUS_OVERLAP_RIGHT =     (1 << 16), /*!< The azimuth rotator has rotated right (CW) past 360 degrees. */
 } rot_status_t;
+// Update this if any additions to status definitions
+#define HAMLIB_MAX_ROTOR_STATUS 16
 
 //! @cond Doxygen_Suppress
 /* So far only used in tests/sprintflst.c. */

src/sprintflst.c

@@ -819,7 +819,7 @@ int rot_sprintf_status(char *str, int nlen, rot_status_t status)
         return 0;
     }
 
-    for (i = 0; i < HAMLIB_MAX_ROTORS; i++)
+    for (i = 0; i <= HAMLIB_MAX_ROTOR_STATUS; i++)
     {
         const char *sv = rot_strstatus(status & ROT_STATUS_N(i));