--- a/th_datastruct.c	Thu May 10 16:04:15 2018 +0300
+++ b/th_datastruct.c	Thu May 10 17:15:36 2018 +0300
@@ -415,16 +415,15 @@
 }
 
 
-BOOL th_growbuf_grow(th_growbuf_t *buf, const size_t grow)
+BOOL th_growbuf_grow(th_growbuf_t *buf, const size_t amount)
 {
     if (buf == NULL)
         return FALSE;
 
-    if (buf->data == NULL || buf->len + grow >= buf->size)
+    if (buf->data == NULL || buf->len + amount >= buf->size)
     {
-        buf->size += grow + (buf->mingrow > 0 ? buf->mingrow : TH_BUFGROW);
-        buf->data = (uint8_t *) th_realloc(buf->data, buf->size);
-        if (buf->data == NULL)
+        buf->size += amount + (buf->mingrow > 0 ? buf->mingrow : TH_BUFGROW);
+        if ((buf->data = th_realloc(buf->data, buf->size)) == NULL)
             return FALSE;
     }
     return TRUE;
@@ -459,15 +458,15 @@
 }
 
 
-BOOL th_growbuf_put_str(th_growbuf_t *buf, const void *s, const size_t len)
+BOOL th_growbuf_put_str(th_growbuf_t *buf, const void *str, const size_t len)
 {
-    if (s == NULL)
+    if (str == NULL)
         return FALSE;
 
     if (!th_growbuf_grow(buf, len + 1))
         return FALSE;
 
-    memcpy(buf->data + buf->len, s, len + 1);
+    memcpy(buf->data + buf->len, str, len + 1);
     buf->len += len;
 
     return TRUE;