Merge pull request #71 from voslartomas/master

fix: newest xcode fail to build

Author: itinance

ios/sha256.m

@@ -15,7 +15,7 @@ @implementation sha256Lib
 
 RCT_EXPORT_MODULE()
 
-typedef unsigned char (*DIGEST_FUNCTION)(const void *data, CC_LONG len, unsigned char *md);
+typedef unsigned char *DIGEST_FUNCTION(const void *data, CC_LONG len, unsigned char *md);
 
 - (NSString*) calcHash: (NSString*) subject withDigestFunction: (DIGEST_FUNCTION) digest withDigestLength: (int) digestLength {