fix spelling mistakes

glslang/Include/InfoSink.h

@@ -92,7 +92,7 @@ public:
         case EPrefixInternalError: append("INTERNAL ERROR: "); break;
         case EPrefixUnimplemented: append("UNIMPLEMENTED: ");  break;
         case EPrefixNote:          append("NOTE: ");           break;
-        default:                   append("UNKOWN ERROR: ");   break;
+        default:                   append("UNKNOWN ERROR: ");   break;
         }
     }
     void location(const TSourceLoc& loc) {

glslang/Include/PoolAlloc.h

@@ -95,7 +95,7 @@ public:
 
     void checkAllocList() const;
 
-    // Return total size needed to accomodate user buffer of 'size',
+    // Return total size needed to accommodate user buffer of 'size',
     // plus our tracking data.
     inline static size_t allocationSize(size_t size) {
         return size + 2 * guardBlockSize + headerSize();
@@ -241,8 +241,8 @@ protected:
     int numCalls;           // just an interesting statistic
     size_t totalBytes;      // just an interesting statistic
 private:
-    TPoolAllocator& operator=(const TPoolAllocator&);  // dont allow assignment operator
-    TPoolAllocator(const TPoolAllocator&);  // dont allow default copy constructor
+    TPoolAllocator& operator=(const TPoolAllocator&);  // don't allow assignment operator
+    TPoolAllocator(const TPoolAllocator&);  // don't allow default copy constructor
 };
 
 

glslang/OSDependent/Unix/ossource.cpp

@@ -61,7 +61,7 @@ static void DetachThreadLinux(void *)
 
 
 //
-// Registers cleanup handler, sets cancel type and state, and excecutes the thread specific
+// Registers cleanup handler, sets cancel type and state, and executes the thread specific
 // cleanup handler.  This function will be called in the Standalone.cpp for regression 
 // testing.  When OpenGL applications are run with the driver code, Linux OS does the 
 // thread cleanup.