Fix bug where old i counter used instead of ret val for arg location

wolfCLU/README.md

@@ -6,7 +6,8 @@ This is the wolfSSL: Command Line Utility (wolfCLU).
 
 To use this feature, please configure and install wolfssl with the following commands:
 
-    ./configure --enable-pwdbased --enable-opensslextra --enable-keygen --enable-ed25519
+    ./configure --enable-pwdbased --enable-opensslextra --enable-keygen \
+                --enable-ed25519 --enable-certgen \
      && make && make check
 
 If that succeeds, run:

wolfCLU/clu_include/clu_optargs.h

@@ -33,7 +33,7 @@ enum {
     RSA,
     ECC,
     ED25519,
-    
+
     CERT_SHA,
     CERT_SHA224,
     CERT_SHA256,

wolfCLU/clu_src/hash/clu_hash_setup.c

@@ -88,10 +88,14 @@ int wolfCLU_hashSetup(int argc, char** argv)
         return FATAL_ERROR;
     }
 
+    /* returns location of the arg in question if present */
     ret = wolfCLU_checkForArg("-in", 3, argc, argv);
     if (ret > 0) {
         /* input file/text */
-        in = XMALLOC(strlen(argv[i+1])+1, HEAP_HINT, DYNAMIC_TYPE_TMP_BUFFER);
+        int argLen = (int) XSTRLEN(argv[ret+1]);
+        int fullLen = (int) ((argLen + 1) * sizeof(char));
+
+        in = XMALLOC(fullLen, HEAP_HINT, DYNAMIC_TYPE_TMP_BUFFER);
         if (in == NULL)
             return MEMORY_E;