Fix Buffer::Iterator::go_previous_line()

src/core/Buffer-Iterator.cc

@@ -153,18 +153,16 @@ bool Buffer::Iterator::go_right_in_line(bool allow_eol)
 bool Buffer::Iterator::go_previous_line()
 {
     Iterator i2 = *this;
-    i2.go_back();
-    while (i2.valid() && (*i2 != '\n'))
+    while (i2.valid())
     {
         i2.go_back();
-    }
-    i2.go_back();
-    if (i2.valid())
-    {
-        m_line--;
-        m_offset = i2.m_offset;
-        go_start_of_line();
-        return true;
+        if (*i2 == '\n')
+        {
+            i2.go_start_of_line();
+            m_line--;
+            m_offset = i2.m_offset;
+            return true;
+        }
     }
     return false;
 }