zero terminate the buffer spitout() returns, as the sws.c code depends on

that!

tests/server/getpart.c

@@ -58,14 +58,14 @@ char *appendstring(char *string, /* original string */
                    char base64) /* 1 if base64 encoded */
 {
   size_t len = strlen(buffer);
-  size_t needed_len = len + *stringlen;
+  size_t needed_len = len + *stringlen + 1;
   char buf64[256]; /* big enough? */
 
   if(base64) {
     /* decode the given buffer first */
     len = Curl_base64_decode(buffer, buf64); /* updated len */
     buffer = buf64;
-    needed_len = len + *stringlen; /* recalculate */
+    needed_len = len + *stringlen + 1; /* recalculate */
   }
 
   if(needed_len >= *stralloc) {
@@ -83,6 +83,7 @@ char *appendstring(char *string, /* original string */
   /* memcpy to support binary blobs */
   memcpy(&string[*stringlen], buffer, len);
   *stringlen += len;
+  string[*stringlen]=0;
 
   return string;
 }
@@ -217,8 +218,10 @@ int main(int argc, char **argv)
   }
   else {
     size_t size;
+    unsigned int i;
     const char *buffer = spitout(stdin, argv[1], argv[2], &size);
-    printf("%s", buffer);
+    for(i=0; i< size; i++)
+      printf("%c", buffer[i]);
   }
   return 0;
 }