[LyX/master] Make clang happy

[Kornel Benko]

commit 4feb6aaea95670caa5b1292a0f618c2c8777343a
Author: Kornel Benko <kornel at lyx.org>
Date:   Sat Apr 2 17:01:02 2022 +0200

    Make clang happy
    
    Omitting 'error: comparison of integer expressions of different signedness'
---
 src/lyxfind.cpp |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lyxfind.cpp b/src/lyxfind.cpp
index 53058dd..be11b16 100644
--- a/src/lyxfind.cpp
+++ b/src/lyxfind.cpp
@@ -3863,7 +3863,7 @@ string MatchStringAdv::normalize(docstring const & s, bool ignore_format) const
 		t = t.substr(1);
 	// Remove [%]*\n at end
 	while (!t.empty() && t[t.size() - 1] == '\n') {
-		int count = 1;
+		size_t count = 1;
 		if (!ignore_format) {
 			while ((t.size() > 1 + count) && (t[t.size() - 1 - count] == '%'))
 				count++;
@@ -3892,7 +3892,7 @@ string MatchStringAdv::normalize(docstring const & s, bool ignore_format) const
 				t.replace(pos, 1, " ");
 			}
 			if (!ignore_format) {
-				int count = 0;
+				size_t count = 0;
 				while ((pos > count + 1) && (t[pos - 1 -count] == '%')) {
 					count++;
 				}