[SYCL][NFC] Prevent possible out-of-bounds access

Author: AlexeySachkov

sycl/source/detail/config.cpp

@@ -106,8 +106,8 @@ void readConfig(bool ForceInitialization) {
       // Finding the position of '='
       Position = BufString.find("=");
       // Checking that the variable name is less than MAX_CONFIG_NAME and more
-      // than zero character
-      if ((Position <= MAX_CONFIG_NAME) && (Position > 0)) {
+      // than zero characters
+      if ((Position < MAX_CONFIG_NAME) && (Position > 0)) {
         // Checking that the value is less than MAX_CONFIG_VALUE and
         // more than zero character
         if ((BufString.length() - (Position + 1) <= MAX_CONFIG_VALUE) &&