Fix bug in `String::To{Upper|Lower}`

These were accidentally calling the version of `String::append()` that takes an `int` and prints its decimal value, rather than the version that takes a `char` and appends the corresponding ASCII character.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/core/slang-string.h b/source/core/slang-string.h
index ba68e405e..3c1b48e8c 100644
--- a/source/core/slang-string.h
+++ b/source/core/slang-string.h
@@ -506,7 +506,7 @@ namespace Slang
             String result;
             for (auto c : *this)
             {
-                int d = (c >= 'a' && c <= 'z') ? (c - ('a' - 'A')) : c;
+                char d = (c >= 'a' && c <= 'z') ? (c - ('a' - 'A')) : c;
                 result.append(d);
             }
             return result;
@@ -517,7 +517,7 @@ namespace Slang
             String result;
             for (auto c : *this)
             {
-                int d = (c >= 'A' && c <= 'Z') ? (c - ('A' - 'a')) : c;
+                char d = (c >= 'A' && c <= 'Z') ? (c - ('A' - 'a')) : c;
                 result.append(d);
             }
             return result;