c: Fix some dumb uses of initialized stuff

Can't figure out what's wrong with the change to struct expr from 9721d6ba40
but it makes valgrind complain and causes miscompilation of the compiler
itself..

1 files changed, 7 insertions, 3 deletions

diff --git a/c/lex.c b/c/lex.c
index 9b6de51..b08a704 100644
--- a/c/lex.c
+++ b/c/lex.c
@@ -545,11 +545,12 @@ Begin:
          --lx->chrbuf0;
          if (lx->chrbuf0 + MAXLITLEN >= countof(lx->chrbuf))
             fillchrbuf(lx);
-         uchar *p = &lx->chrbuf[lx->chrbuf0];
          int n = 1;
+         uchar *p = &lx->chrbuf[lx->chrbuf0];
          for (; isppnum(p[n-1], p[n]); ++n) {
-            if (n >= MAXLITLEN) TooLong: {
+            if (n >= MAXLITLEN) {
                lx->chridx = lx->chridxbuf[lx->chrbuf0+n-1];
+            TooLong:
                fatal(&(struct span) {{ idx, lx->chridx - idx, lx->fileid }},
                      "token is too long");
             }
@@ -571,7 +572,10 @@ Begin:
          uchar *p = &lx->chrbuf[lx->chrbuf0];
          int n = 1;
          for (; !aissep(p[n]); ++n) {
-            if (n >= MAXLITLEN) goto TooLong;
+            if (n >= MAXLITLEN) {
+               lx->chridx = lx->chridxbuf[lx->chrbuf0+n-1];
+               goto TooLong;
+            }
          }
          tk->blue = 0;
          tk->len = n;