Fixed indefinite articles before "Integer" [ci skip]

Author: nobu

core/integer/shared/equal.rb

@@ -11,7 +11,7 @@
       10.send(@method, bignum_value).should == false
     end
 
-    it "calls 'other == self' if the given argument is not a Integer" do
+    it "calls 'other == self' if the given argument is not an Integer" do
       1.send(@method, '*').should == false
 
       obj = mock('one other')

core/marshal/shared/load.rb

@@ -667,7 +667,7 @@
     end
   end
 
-  describe "for a Integer" do
+  describe "for an Integer" do
     it "loads 0" do
       Marshal.send(@method, "\004\bi\000").should == 0
       Marshal.send(@method, "\004\bi\005").should == 0

core/rational/comparison_spec.rb

@@ -4,7 +4,7 @@
   it_behaves_like :rational_cmp_rat, :<=>
 end
 
-describe "Rational#<=> when passed a Integer object" do
+describe "Rational#<=> when passed an Integer object" do
   it_behaves_like :rational_cmp_int, :<=>
 end
 

library/win32ole/win32ole_variable/value_spec.rb

@@ -9,7 +9,7 @@
       @var = ole_type.variables[0]
     end
 
-    it "returns a Integer" do
+    it "returns an Integer" do
       # according to doc, this could return nil
       @var.value.should be_kind_of Integer
     end