1. Fixed a bug causing seemingly random crashes when compound callsign

is decoded.
2. Fixed minor bug in the "Test PTT" function.
3. Background of DialFrequency label goes red if frequency differs from
default for this band by mode than 10 kHz.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3208 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

lib/unpackmsg.f90

@@ -39,6 +39,10 @@ subroutine unpackmsg(dat,msg)
 
   if(iv2.gt.0) then
 ! This is a JT65v2 message
+     do i=1,4
+        if(ichar(psfx(i:i)).eq.0) psfx(i:i)=' '
+     enddo
+
      n1=len_trim(psfx)
      n2=len_trim(c2)
      if(iv2.eq.1) msg='CQ '//psfx(:n1)//'/'//c2(:n2)//' '//grid