Minor Luac fixes (#2579)

app/lua/ldump.c

@@ -47,7 +47,7 @@ static void DumpChar(int y, DumpState* D)
 
 static void Align4(DumpState *D)
 {
- while(D->wrote&3)
+ while(D->wrote&3 && D->status==0)
   DumpChar(0,D);
 }
 

app/uzlib/uzlib_deflate.c

@@ -201,7 +201,7 @@ static void genCodeRecs (const codeRecord *rec, ushort len,
   for (i = start; i < start+len; i++, c++) {
     if (*c == 0xFF)
       b++, c++;
-    m +=!(*c & 0x80) ? *c & 0x7F : 2 << *c;
+    m += (*c & 0x80) ? 2 << (*c & 0x1F) : *c;
     *p++ = (codeRecord) {i, b, last + 1, (last = m)};
   }
 }