Replaced `==` with `===` and `!=` with `!==` in /system/database
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
index 334e08c..991f6ba 100644
--- a/system/database/DB_result.php
+++ b/system/database/DB_result.php
@@ -81,7 +81,7 @@
 			return $this->custom_result_object[$class_name];
 		}
 
-		if ($this->result_id === FALSE OR $this->num_rows() == 0)
+		if ($this->result_id === FALSE OR $this->num_rows() === 0)
 		{
 			return array();
 		}
@@ -122,7 +122,7 @@
 		// In the event that query caching is on the result_id variable
 		// will return FALSE since there isn't a valid SQL resource so
 		// we'll simply return an empty array.
-		if ($this->result_id === FALSE OR $this->num_rows() == 0)
+		if ($this->result_id === FALSE OR $this->num_rows() === 0)
 		{
 			return array();
 		}
@@ -153,7 +153,7 @@
 		// In the event that query caching is on the result_id variable
 		// will return FALSE since there isn't a valid SQL resource so
 		// we'll simply return an empty array.
-		if ($this->result_id === FALSE OR $this->num_rows() == 0)
+		if ($this->result_id === FALSE OR $this->num_rows() === 0)
 		{
 			return array();
 		}
@@ -224,7 +224,7 @@
 			return;
 		}
 
-		if ($key != '' && ! is_null($value))
+		if ($key !== '' && ! is_null($value))
 		{
 			$this->row_data[$key] = $value;
 		}
@@ -245,7 +245,7 @@
 			return NULL;
 		}
 
-		if ($n != $this->current_row && isset($result[$n]))
+		if ($n !== $this->current_row && isset($result[$n]))
 		{
 			$this->current_row = $n;
 		}
@@ -268,7 +268,7 @@
 			return NULL;
 		}
 
-		if ($n != $this->current_row && isset($result[$n]))
+		if ($n !== $this->current_row && isset($result[$n]))
 		{
 			$this->current_row = $n;
 		}
@@ -291,7 +291,7 @@
 			return NULL;
 		}
 
-		if ($n != $this->current_row && isset($result[$n]))
+		if ($n !== $this->current_row && isset($result[$n]))
 		{
 			$this->current_row = $n;
 		}