Fix mistaken replacements in error-pattern comments in tests

Author: marijnh

src/test/compile-fail/break-uninit.rs

@@ -1,5 +1,5 @@
 // xfail-boot
-// error-pattern::Unsatisfied precondition
+// error-pattern:Unsatisfied precondition
 
 fn foo() -> int {
   let int x;

src/test/compile-fail/break-uninit2.rs

@@ -1,5 +1,5 @@
 // xfail-boot
-// error-pattern::Unsatisfied precondition
+// error-pattern:Unsatisfied precondition
 
 fn foo() -> int {
   let int x;

src/test/compile-fail/import-loop-2.rs

@@ -1,4 +1,4 @@
-// error-pattern::cyclic import
+// error-pattern:cyclic import
 
 mod a {
   import b::x;

src/test/compile-fail/import-loop.rs

@@ -1,4 +1,4 @@
-// error-pattern::cyclic import
+// error-pattern:cyclic import
 
 import x;
 

src/test/compile-fail/multiline-comment-line-tracking.rs

@@ -1,5 +1,5 @@
 // -*- rust -*-
-// error-pattern::9:2
+// error-pattern:9:2
 
 /* 1
  * 2

src/test/compile-fail/reserved-dec.rs

@@ -1,4 +1,4 @@
-// error-pattern::reserved keyword
+// error-pattern:reserved keyword
 
 fn main() {
   let int dec = 0;

src/test/compile-fail/reserved-f128.rs

@@ -1,4 +1,4 @@
-// error-pattern::reserved keyword
+// error-pattern:reserved keyword
 
 fn main() {
   let int f128 = 0;

src/test/compile-fail/reserved-f16.rs

@@ -1,4 +1,4 @@
-// error-pattern::reserved keyword
+// error-pattern:reserved keyword
 
 fn main() {
   let int f16 = 0;

src/test/compile-fail/reserved-f80.rs

@@ -1,4 +1,4 @@
-// error-pattern::reserved keyword
+// error-pattern:reserved keyword
 
 fn main() {
   let int f80 = 0;

src/test/compile-fail/reserved-m128.rs

@@ -1,4 +1,4 @@
-// error-pattern::reserved keyword
+// error-pattern:reserved keyword
 
 fn main() {
   let int m128 = 0;