Fixed off-by-one error in the TString 'pop' function.

tstring.c

@@ -74,10 +74,10 @@ void TStringPop(char buffer[8], TString* string) {
     if (!string) return;
     if (string->ByteCount == 0) return;
     
-    for (int i = string->ByteCount; i >= 0; i--) {
+    for (int i = string->ByteCount - 1; i >= 0; i--) {
         unsigned int width = GetGlyphByteWidth(string->Characters[i]);
         
-        if (width) {
+        if (width > 0) {
             //If we've been provided a buffer, then populate it with the glyph we're removing.
             if (buffer) { 
                 memset(buffer, '\0', 8);
@@ -132,6 +132,8 @@ void TStringRemoveRange(int startIndex, int count, TString* string) {
         memcpy(&string->Characters[startByte], buffer, remainder);
     }
 
+    memset(&string->Characters[endByte], '\0', string->ByteCount - endByte);
+
     string->Length -= glyphCount;
     string->ByteCount -= endByte - startByte;
 }