Fix typos

Change-Id: I57ddd4f37138287fce235b10469257c1bcb1efe7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/211772
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

vcl/source/app/salplug.cxx

@@ -17,7 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-// Th current high-level preprocessor structure is:
+// The current high-level preprocessor structure is:
 //
 // if !HAVE_FEATURE_UI
 //   => STATIC_SAL_INSTANCE

vcl/source/window/printdlg.cxx

@@ -359,13 +359,13 @@ void PrintDialog::PrintPreviewWindow::preparePreviewBitmap()
     // tdf#141761
     // The display quality of the Preview is pretty ugly when
     // FormControls are used. I made a deep-dive why this happens,
-    // and in principle the reason is the Mteafile::Scale used
+    // and in principle the reason is the Metafile::Scale used
     // below. Since Metafile actions are integer, that floating point
     // scale leads to rounding errors that make the lines painting
     // the FormControls disappear in the surrounding ClipRegions.
-    // That Scale cannot be avoided since the Metafile contains it's
+    // That Scale cannot be avoided since the Metafile contains its
     // own SetMapMode commands which *will* be executed on ::Play,
-    // so the ::Scale is the only possibility fr Metafile currently:
+    // so the ::Scale is the only possibility for Metafile currently:
     // Giving a Size as parameter in ::Play will *not* work due to
     // the relativeMapMode that gets created will fail on
     // ::SetMapMode actions in the Metafile - and FormControls DO
@@ -393,7 +393,7 @@ void PrintDialog::PrintPreviewWindow::preparePreviewBitmap()
         // memory problems, still limit to a useful factor is
         // necessary, also empirically estimated to
         // avoid the quality from collapsing (using a direct
-        // in-between , ceil'd result)
+        // in-between, ceil'd result)
         static const double fMaximumQualitySquare(1396221.0);
 
         if(fNewNeededPixels > fMaximumQualitySquare)

xmlsecurity/source/dialogs/certificatechooser.cxx

@@ -108,7 +108,7 @@ void CertificateChooser::BeforeRun()
     // We can't check for personal certificates before raising this dialog,
     // because the mozilla implementation throws a NoPassword exception,
     // if the user pressed cancel, and also if the database does not exist!
-    // But in the later case, the is no password query, and the user is confused
+    // But in the later case, there is no password query, and the user is confused
     // that nothing happens when pressing "Add..." in the SignatureDialog.
 
     // PostUserEvent( LINK( this, CertificateChooser, Initialize ) );