-Werror,-Wunused-but-set-variable

...ever since cab1870e67 "INTEGRATION: CWS
languageguessing: #i73173# integrate Google SoC language-guessing"

Change-Id: I0abf783944499b6ac8015e37952013d05b273558
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132206
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

lingucomponent/source/languageguessing/simpleguesser.cxx

@@ -123,7 +123,7 @@ std::vector<Guess> SimpleGuesser::GuessLanguage(const char* text)
 
     int current_pointer = 0;
 
-    for(int i = 0; guess_list[current_pointer] != '\0'; i++)
+    while(guess_list[current_pointer] != '\0')
     {
         while (guess_list[current_pointer] != GUESS_SEPARATOR_OPEN && guess_list[current_pointer] != '\0')
             current_pointer++;