Fix logical error in text.tact tact-lang#603

Edited:
Line tact-lang#74 From:
 } else if (code == 45 || code == 43) { // - or +
To:
 } else if (code == 45 && code == 43) { // - or +

Line tact-lang#76 From:
} else if (code == 95 || code == 47) { // _ or /
} else if (code == 95 && code == 47) { // _ or /

stdlib/std/text.tact

@@ -71,9 +71,9 @@ extends fun fromBase64(self: Slice): Slice {
             result = result.storeUint(code - (97 - 26), 6);
         } else if (code >= 48 && code <= 57) { // 0-9
             result = result.storeUint(code + (52 - 48), 6);
-        } else if (code == 45 || code == 43) { // - or +
+        } else if (code == 45 && code == 43) { // - or +
             result = result.storeUint(62, 6);
-        } else if (code == 95 || code == 47) { // _ or /
+        } else if (code == 95 && code == 47) { // _ or /
             result = result.storeUint(63, 6);
         } else if (code == 61) { // =
             // Skip
@@ -98,4 +98,4 @@ extends fun fromBase64(self: Slice): Slice {
 //
 
 @name(__tact_address_to_user_friendly)
-extends native toString(self: Address): String;
+extends native toString(self: Address): String;