net.mbedtls: make compile with -prod

CHANGELOG.md

@@ -4,8 +4,9 @@
  in addition to `[skip]`. This allows having custom behavior for different serialization methods.
 - ORM: fixed a foreign key bug that could result in an extra insert.
 - Generic functions as function parameters are now supported: `fn f[T](x T, i int, f_ Fn[T]) T { `.
-- Enum values now can have attributes. 
+- Enum values now can have attributes.
 - json: Enum value string serialization supports `[json:'alias']` to change its string values.
+- Functions can now return fixed size arrays.
 
 ## V 0.3.4
 
@@ -142,12 +143,12 @@ Final steps in making the Option type a first class type:
   	a T
   	b U
   }
-  
+
   foo := Foo{
   	a: 2
   	b: 'x'
   }
-  
+
   println(foo)
   ```
 - unsafe: dereferencing nil references is no longer allowed in the following case:

vlib/net/mbedtls/ssl_connection.v

@@ -12,14 +12,15 @@ fn init() {
 	$if trace_ssl ? {
 		eprintln(@METHOD)
 	}
-	C.mbedtls_ctr_drbg_init(&mbedtls.ctr_drbg)
-	C.mbedtls_entropy_init(&mbedtls.entropy)
-
-	ret := C.mbedtls_ctr_drbg_seed(&mbedtls.ctr_drbg, C.mbedtls_entropy_func, &mbedtls.entropy,
-		0, 0)
-	if ret != 0 {
-		C.mbedtls_ctr_drbg_free(&mbedtls.ctr_drbg)
-		panic('Failed to seed ssl context: ${ret}')
+	unsafe { // Unsafe is needed for taking an address of const
+		C.mbedtls_ctr_drbg_init(&mbedtls.ctr_drbg)
+		C.mbedtls_entropy_init(&mbedtls.entropy)
+		ret := C.mbedtls_ctr_drbg_seed(&mbedtls.ctr_drbg, C.mbedtls_entropy_func, &mbedtls.entropy,
+			0, 0)
+		if ret != 0 {
+			C.mbedtls_ctr_drbg_free(&mbedtls.ctr_drbg)
+			panic('Failed to seed ssl context: ${ret}')
+		}
 	}
 }
 
@@ -110,7 +111,9 @@ fn (mut s SSLConn) init() ! {
 		return error_with_code('Failed to set SSL configuration', ret)
 	}
 
-	C.mbedtls_ssl_conf_rng(&s.conf, C.mbedtls_ctr_drbg_random, &mbedtls.ctr_drbg)
+	unsafe {
+		C.mbedtls_ssl_conf_rng(&s.conf, C.mbedtls_ctr_drbg_random, &mbedtls.ctr_drbg)
+	}
 
 	if s.config.verify != '' || s.config.cert != '' || s.config.cert_key != '' {
 		s.certs = &SSLCerts{}
@@ -127,8 +130,10 @@ fn (mut s SSLConn) init() ! {
 			ret = C.mbedtls_x509_crt_parse(&s.certs.client_cert, s.config.cert.str, s.config.cert.len)
 		}
 		if s.config.cert_key != '' {
-			ret = C.mbedtls_pk_parse_key(&s.certs.client_key, s.config.cert_key.str, s.config.cert_key.len,
-				0, 0, C.mbedtls_ctr_drbg_random, &mbedtls.ctr_drbg)
+			unsafe {
+				ret = C.mbedtls_pk_parse_key(&s.certs.client_key, s.config.cert_key.str,
+					s.config.cert_key.len, 0, 0, C.mbedtls_ctr_drbg_random, &mbedtls.ctr_drbg)
+			}
 		}
 	} else {
 		if s.config.verify != '' {
@@ -138,8 +143,10 @@ fn (mut s SSLConn) init() ! {
 			ret = C.mbedtls_x509_crt_parse_file(&s.certs.client_cert, &char(s.config.cert.str))
 		}
 		if s.config.cert_key != '' {
-			ret = C.mbedtls_pk_parse_keyfile(&s.certs.client_key, &char(s.config.cert_key.str),
-				0, C.mbedtls_ctr_drbg_random, &mbedtls.ctr_drbg)
+			unsafe {
+				ret = C.mbedtls_pk_parse_keyfile(&s.certs.client_key, &char(s.config.cert_key.str),
+					0, C.mbedtls_ctr_drbg_random, &mbedtls.ctr_drbg)
+			}
 		}
 	}
 	if ret < 0 {