bufferedSocket: compute linelen correctly after appending new data to buffer.

Don't need giveup(), just expired().
Fix off-by-one error in consume().

src/szgPartiview.h

@@ -119,7 +119,7 @@ class bufferedSocket : public arSocket {
                if(linelen < 0) {
                    char *newline = (char *)memchr(tbuf, '\n', got);
                    if(newline != 0) {                  // Yep.
-                       linelen = buf.size() + (newline - tbuf);
+                       linelen = buf.size() - got + (newline - tbuf);
                        buf[linelen] = '\0';            // Replace final \n or \r\n with \0 or \0\0
                        if(linelen > 0 && buf[linelen] == '\r')
                            buf[linelen - 1] = '\0';
@@ -132,11 +132,6 @@ class bufferedSocket : public arSocket {
            return linelen;
        }
 
-       bool giveup()
-       {
-           return seeneof;
-       }
-
        char *str() {
            return &buf[0];     // Return pointer to line, which should be a \000-terminated string.
                                // Only valid if linelen >= 0.
@@ -149,7 +144,7 @@ class bufferedSocket : public arSocket {
        int consume() {
            if(linelen >= 0) {
                // have any data following the \n?
-               if(buf.size() > linelen) {
+               if(buf.size() > linelen+1) {
                    int newsize = buf.size() - (linelen+1);
                    memmove(&buf[0], &buf[linelen+1], newsize);