Make warning message about wallet balance possibly

being incorrect less ambiguous.

Fixes bitcoin#9079

src/qt/forms/modaloverlay.ui

@@ -130,7 +130,7 @@ QLabel { color: rgb(40,40,40);  }</string>
              <item>
               <widget class="QLabel" name="infoText">
                <property name="text">
-                <string>The displayed information may be out of date. Your wallet automatically synchronizes with the Bitcoin network after a connection is established, but this process has not completed yet. This means that recent transactions will not be visible, and the balance will not be up-to-date until this process has completed.</string>
+                <string>Recent transactions may not yet be visible, and therefore your wallet's balance might be incorrect. This information will be correct once your wallet has finished synchronizing with the bitcoin network, as detailed below.</string>
                </property>
                <property name="textFormat">
                 <enum>Qt::RichText</enum>
@@ -149,7 +149,7 @@ QLabel { color: rgb(40,40,40);  }</string>
                 </font>
                </property>
                <property name="text">
-                <string>Spending bitcoins may not be possible during that phase!</string>
+                <string>Attempting to spend bitcoins that are affected by not-yet-displayed transactions will not be accepted by the network.</string>
                </property>
                <property name="textFormat">
                 <enum>Qt::RichText</enum>