refactor one if logic and fix two warning

kpack_c.c

@@ -59,13 +59,13 @@ unsigned preprocess_calltrick(unsigned char *infile, unsigned insize, unsigned c
     unsigned char *buf_ptr = buf;
     do {
         //printf("infile_ptr = %p, count = %u\n", infile_ptr, count);
-        unsigned al = *(infile_ptr++);
-        al -= 0x0E8;
-        if (al > 1) { // if != E8 and != E9
-            continue;
-        }
+        unsigned opcode = *(infile_ptr++);
         // E8 dword: call rel32
         // E9 dword: jmp rel32
+        if (opcode > 0xE9)
+        {
+            continue;
+        }
         if (count < 5) {
             break;
         }
@@ -102,7 +102,7 @@ unsigned preprocess_calltrick(unsigned char *infile, unsigned insize, unsigned c
         memcpy(tmp - 4, cti, 1);
     }
     free(buf);
-    return (unsigned)tmp;
+    return 1;//(unsigned)tmp;
 
 pack_calltrick_fail:
     *ctn = 0;

lzma_c/MatchFinder.c

@@ -99,7 +99,7 @@ static void LZInWindow_Init(void)
     ReadBlock();
 }
 #else
-#define LZInWindow_Create(a,b,c,d) /* nothing */
+#define LZInWindow_Create(a,b,c,d) do {(void)(a); (void)(b); (void)(c); (void)(d);} while(0); /* nothing */
 #define LZInWindow_Init() _buffer--, _pos++, _streamPos++
 #endif