zstdcli: -r (operate recursively on directories) works with dictBuilder and compression

lib/common/zbuff_static.h

@@ -47,9 +47,7 @@ extern "C" {
 #include "zstd_static.h"     /* ZSTD_parameters */
 #include "zbuff.h"
 
-#ifndef MIN
-    #define MIN(a,b) ((a)<(b) ? (a) : (b))
-#endif
+#define ZBUFF_MIN(a,b) ((a)<(b) ? (a) : (b))
 
 
 /*-*************************************
@@ -73,7 +71,7 @@ ZSTDLIB_API size_t ZBUFF_compressInit_advanced(ZBUFF_CCtx* cctx,
 
 MEM_STATIC size_t ZBUFF_limitCopy(void* dst, size_t dstCapacity, const void* src, size_t srcSize)
 {
-    size_t length = MIN(dstCapacity, srcSize);
+    size_t length = ZBUFF_MIN(dstCapacity, srcSize);
     memcpy(dst, src, length);
     return length;
 }