Fix LFU Parsing for Values Larger Than 127 (#62)

Corrected LFU parsing by casting to uint8 instead of int8 to handle values >127 properly.

Author: moticless

src/lib/parser.c

@@ -1571,7 +1571,7 @@ RdbStatus elementFreq(RdbParser *p) {
 
     /*** ENTER SAFE STATE ***/
 
-    p->elmCtx.key.info.lfuFreq =  *((int8_t *) binfoFreq->ref);
+    p->elmCtx.key.info.lfuFreq =  *((uint8_t *) binfoFreq->ref);
     return nextParsingElement(p, PE_NEXT_RDB_TYPE);
 }