Fix strncmp return type and first parameter

Fix #8117, close #8119

PowerEditor/installer/APIs/c.xml

@@ -1178,8 +1178,8 @@
 			</Overload>
 		</KeyWord>
 		<KeyWord name="strncmp" func="yes">
-			<Overload retVal="char *" >
-				<Param name="char *s1" />
+			<Overload retVal="int" >
+				<Param name="const char *s1" />
 				<Param name="const char *s2" />
 				<Param name="size_t n" />
 			</Overload>

PowerEditor/installer/APIs/cpp.xml

@@ -1624,8 +1624,8 @@
 			</Overload>
 		</KeyWord>
 		<KeyWord name="strncmp" func="yes">
-			<Overload retVal="char *" >
-				<Param name="char *s1" />
+			<Overload retVal="int" >
+				<Param name="const char *s1" />
 				<Param name="const char *s2" />
 				<Param name="size_t n" />
 			</Overload>