loplugin:redundantfcast

(Presumably <https://gerrit.libreoffice.org/#/c/53201/> "vcl: ImplSolarize() to
BitmapSolarizeFilter" passed Gerrit/Jenkins because the Linux Clang plugin build
was done in C++11, not C++17 mode.)

Change-Id: I8a7afee18ed2f83921eb82b74252d0ebf76c25d5

vcl/source/bitmap/BitmapEmbossGreyFilter.cxx

@@ -145,7 +145,7 @@ BitmapEx BitmapEmbossGreyFilter::execute(BitmapEx const& rBitmapEx)
     }
 
     if (bRet)
-        return BitmapEx(rBitmapEx);
+        return rBitmapEx;
 
     return BitmapEx();
 }

vcl/source/bitmap/BitmapMosaicFilter.cxx

@@ -179,7 +179,7 @@ BitmapEx BitmapMosaicFilter::execute(BitmapEx const& rBitmapEx)
     }
 
     if (bRet)
-        return BitmapEx(rBitmapEx);
+        return rBitmapEx;
 
     return BitmapEx();
 }

vcl/source/bitmap/BitmapSepiaFilter.cxx

@@ -98,7 +98,7 @@ BitmapEx BitmapSepiaFilter::execute(BitmapEx const& rBitmapEx)
     }
 
     if (bRet)
-        return BitmapEx(rBitmapEx);
+        return rBitmapEx;
 
     return BitmapEx();
 }

vcl/source/bitmap/BitmapSmoothenFilter.cxx

@@ -28,7 +28,7 @@ BitmapEx BitmapSmoothenFilter::execute(BitmapEx const& rBitmapEx)
         bRet = BitmapFilter::Filter(aBitmapEx, BitmapSeparableUnsharpenFilter(mfRadius));
 
     if (bRet)
-        return BitmapEx(rBitmapEx);
+        return rBitmapEx;
 
     return BitmapEx();
 }

vcl/source/bitmap/BitmapSolarizeFilter.cxx

@@ -60,7 +60,7 @@ BitmapEx BitmapSolarizeFilter::execute(BitmapEx const& rBitmapEx)
     }
 
     if (bRet)
-        return BitmapEx(rBitmapEx);
+        return rBitmapEx;
 
     return BitmapEx();
 }