utils: File: Fix potential overflow

src/utils/Filename.cpp

@@ -149,7 +149,7 @@ std::string firstFolder( const std::string& path )
 
 std::string removePath( const std::string& fullPath, const std::string& toRemove )
 {
-    if ( toRemove.length() == 0 )
+    if ( toRemove.length() == 0 || toRemove.length() > fullPath.length() )
         return fullPath;
     auto pos = fullPath.find( toRemove );
     if ( pos == std::string::npos )

test/unittest/FsUtilsTests.cpp

@@ -94,6 +94,7 @@ TEST( FsUtils, removePath )
     ASSERT_EQ( "", utils::file::removePath( "bar/", "bar" ) );
     ASSERT_EQ( "", utils::file::removePath( "/f00/", "/f00/" ) );
     ASSERT_EQ( "/f00", utils::file::removePath( "/f00", "/path/not/found" ) );
+    ASSERT_EQ( "/f00", utils::file::removePath( "/f00", "/loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooongstring/" ) );
 }
 
 TEST( FsUtils, parentFolder )