--- gzip-1.3.3/unlzh.c.4338	2006-09-07 10:49:31.000000000 +0200

+++ gzip-1.3.3/unlzh.c	2006-09-07 11:37:53.000000000 +0200

@@ -252,7 +252,7 @@ local void read_c_len()

                     if (bitbuf & mask) c = right[c];

                     else               c = left [c];

                     mask >>= 1;

-                } while (c >= NT);

+                } while (c >= NT && (mask || c != left[c]));

             }

             fillbuf((int) pt_len[c]);

             if (c <= 2) {

@@ -288,7 +288,7 @@ local unsigned decode_c()

             if (bitbuf & mask) j = right[j];

             else               j = left [j];

             mask >>= 1;

-        } while (j >= NC);

+        } while (j >= NC && (mask || j != left[j])); 

     }

     fillbuf((int) c_len[j]);

     return j;

@@ -305,7 +305,7 @@ local unsigned decode_p()

             if (bitbuf & mask) j = right[j];

             else               j = left [j];

             mask >>= 1;

-        } while (j >= NP);

+        } while (j >= NP && (mask || j != left[j]));

     }

     fillbuf((int) pt_len[j]);

     if (j != 0) j = ((unsigned) 1 << (j - 1)) + getbits((int) (j - 1));