parser robustness: ":" at end of line will lead to parser error

[mhaupt]

Example:

1000 GOTO 20
1010 PRINT "Hello":PRINT "world":
1020 GOTO 950

Line 1010 will crash the parser because the EOL is unexpected at that point.

In my opinion, the parser should be robust enough to ignore this.

[mhaupt]

Fixed.