Fix 2 typos in documentation (PR other/80589).

2017-05-02  Martin Liska  <mliska@suse.cz>

	PR other/80589
	* common.opt: Fix typo.
	* doc/invoke.texi: Likewise.

From-SVN: r247485

gcc/ChangeLog

+2017-05-02  Martin Liska  <mliska@suse.cz>
+
+	PR other/80589
+	* common.opt: Fix typo.
+	* doc/invoke.texi: Likewise.
+
 2017-05-01  Jan Beulich  <jbeulich@suse.com>
 
 	* config/i386/sse.md (xop_vpermil2<mode>3): Do not allow operand

gcc/common.opt

@@ -2492,7 +2492,7 @@ flow and turn the statement with erroneous or undefined behavior into a trap.
 
 fisolate-erroneous-paths-attribute
 Common Report Var(flag_isolate_erroneous_paths_attribute) Optimization
-Detect paths that trigger erroneous or undefined behavior due a null value
+Detect paths that trigger erroneous or undefined behavior due to a null value
 being used in a way forbidden by a returns_nonnull or nonnull
 attribute.  Isolate those paths from the main control flow and turn the
 statement with erroneous or undefined behavior into a trap.

gcc/doc/invoke.texi

@@ -9915,7 +9915,7 @@ The maximum number of insns of an unswitched loop.
 The maximum number of branches unswitched in a single loop.
 
 @item max-loop-headers-insns
-The maximum number of insns in loop header duplicated by he copy loop headers
+The maximum number of insns in loop header duplicated by the copy loop headers
 pass.
 
 @item lim-expensive