don't drop lines without trailing new line character in wxExecute() with capture

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45713 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -151,6 +151,7 @@ wxX11:
 All:
 
 - Fix bug in wxFileConfig when recreating a group (Steven Van Ingelgem)
+- Account for lines without newline at the end in wxExecute()
 
 All (Unix):
 

src/common/utilscmn.cpp

@@ -556,24 +556,27 @@ static bool ReadAll(wxInputStream *is, wxArrayString& output)
 
     wxTextInputStream tis(*is);
 
-    bool cont = true;
-    while ( cont )
+    for ( ;; )
     {
         wxString line = tis.ReadLine();
-        if ( is->Eof() )
-            break;
 
-        if ( !*is )
+        // check for EOF before other errors as it's not really an error
+        if ( is->Eof() )
         {
-            cont = false;
+            // add the last, possibly incomplete, line
+            if ( !line.empty() )
+                output.Add(line);
+            break;
         }
-        else
-        {
+
+        // any other error is fatal
+        if ( !*is )
+            return false;
+
         output.Add(line);
     }
-    }
 
-    return cont;
+    return true;
 }
 #endif // wxUSE_STREAMS